1.
Montignac, Dordogne
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Montignac, also called Montignac sur Vézère or Montignac-Lascaux, is a commune in the Dordogne department in Nouvelle-Aquitaine in southwestern France. It is a town situated on the Vézère river and has been the capital of the canton of Montignac since 1790. In 2015 it became the capital of the newly created Canton de la Vallée de lHomme, the poet Pierre Lachambeaudie was born in the village. Montignac is a commune and small town in the department of Dordogne and it is situated in the historic region of Périgord noir, just below the confluence of the River Vézère and the Laurence, a small river which rises near the town of Thenon. Montignac is 11 km southeast of Thenon,13 km southwest of Terrasson-Lavilledieu, the D704 district road from Brive-la-Gaillarde passes through the town where it intersects with the D65, D704e and D706. The area of the commune is 3,715 hectares, the highest point is in the northwest and the lowest point in the southwest where the Vézère leaves the commune. Montignac is situated at a site with a fine bridge over the Vézère. Their Château de Montignac now lies in ruins, though some wall bases, terraces, Montignac was the home of the nineteenth-century French writer Eugène Le Roy, who was a district tax collector and wrote two celebrated novels about rural life in eighteenth-century Périgord. There is a museum in the town dedicated to him. Montignac is the centre for visiting the prehistoric sites in the Vézère valley. The modern part of the town to the south of the river has several hotels, to the north of the river lies the old town, where there are a maze of streets with fourteenth- to sixteenth-century timbered houses. A market is held twice weekly and there are restaurants where visitors can sit beside the river under medieval timbered beams. Montignac has a bridge, from which fireworks are launched on holidays such as Bastille Day and during the summer festival of world folklore and dance. The main attraction of the region is the Lascaux Cave, actually a complex of caves containing Upper Paleolithic painted art discovered in 1940 and estimated to be 17,300 years old. The cave was put on show in 1948, but it was found that the paintings were being damaged by the carbon dioxide exhaled by visitors, and in 1963, the cave was closed to the public. A replica cave, known as Lascaux II, was opened nearby in 1983, in 1979, Lascaux was added to the UNESCO World Heritage Sites list along with other prehistoric sites in the Vézère valley. Communes of the Dordogne department INSEE
2.
France
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France, officially the French Republic, is a country with territory in western Europe and several overseas regions and territories. The European, or metropolitan, area of France extends from the Mediterranean Sea to the English Channel and the North Sea, Overseas France include French Guiana on the South American continent and several island territories in the Atlantic, Pacific and Indian oceans. France spans 643,801 square kilometres and had a population of almost 67 million people as of January 2017. It is a unitary republic with the capital in Paris. Other major urban centres include Marseille, Lyon, Lille, Nice, Toulouse, during the Iron Age, what is now metropolitan France was inhabited by the Gauls, a Celtic people. The area was annexed in 51 BC by Rome, which held Gaul until 486, France emerged as a major European power in the Late Middle Ages, with its victory in the Hundred Years War strengthening state-building and political centralisation. During the Renaissance, French culture flourished and a colonial empire was established. The 16th century was dominated by civil wars between Catholics and Protestants. France became Europes dominant cultural, political, and military power under Louis XIV, in the 19th century Napoleon took power and established the First French Empire, whose subsequent Napoleonic Wars shaped the course of continental Europe. Following the collapse of the Empire, France endured a succession of governments culminating with the establishment of the French Third Republic in 1870. Following liberation in 1944, a Fourth Republic was established and later dissolved in the course of the Algerian War, the Fifth Republic, led by Charles de Gaulle, was formed in 1958 and remains to this day. Algeria and nearly all the colonies became independent in the 1960s with minimal controversy and typically retained close economic. France has long been a centre of art, science. It hosts Europes fourth-largest number of cultural UNESCO World Heritage Sites and receives around 83 million foreign tourists annually, France is a developed country with the worlds sixth-largest economy by nominal GDP and ninth-largest by purchasing power parity. In terms of household wealth, it ranks fourth in the world. France performs well in international rankings of education, health care, life expectancy, France remains a great power in the world, being one of the five permanent members of the United Nations Security Council with the power to veto and an official nuclear-weapon state. It is a member state of the European Union and the Eurozone. It is also a member of the Group of 7, North Atlantic Treaty Organization, Organisation for Economic Co-operation and Development, the World Trade Organization, originally applied to the whole Frankish Empire, the name France comes from the Latin Francia, or country of the Franks
3.
Lascaux
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Among some of the best-known Upper Paleolithic works of art depicted are primarily large animals, typical local and contemporary fauna that corresponds with the fossil record. The paintings are the combined effort of many generations, and despite continuing debate, Lascaux was inducted into the UNESCO World Heritage Sites list in 1979, as element of the Prehistoric Sites and Decorated Caves of the Vézère Valley. On September 12,1940, the entrance to the Lascaux Cave was discovered by 18 year old Marcel Ravidat, Ravidat returned to the scene with three friends, Jacques Marsal, Georges Agnel, and Simon Coencas, and entered the cave via a long shaft. The teenagers discovered that the walls were covered with depictions of animals. Galleries that suggest continuity. Those include the Hall of the Bulls, the Passageway, the Shaft, the Nave, the Apse, the cave complex was opened to the public in 1948. By 1955, carbon dioxide, heat, humidity, and other contaminants produced by 1,200 visitors per day had visibly damaged the paintings, as air condition deteriorated fungi and lichen increasingly infested the walls. Consequently the cave was closed to the public in 1963, the paintings were restored to their original state, a full range of Lascauxs parietal art is presented at the Centre of Prehistoric Art at Le Parc du Thot. Ochroconis lascauxensis is a species of fungus of the Ascomycota phylum, in May 2012 officially described and named after the locality of its first emergence, the Lascaux cave. It was along with a closely related second species Ochroconis anomala, first observed in 2000 inside the cave, no official announcement on the effect and/or progress of attempted treatments has ever been made. As of 2008, the cave contained black mold, in January 2008, authorities closed the cave for three months even to scientists and preservationists. A single individual was allowed to enter the cave for 20 minutes once a week to monitor climatic conditions, in 2009 it was announced, Mould problem stable. In 2011 the fungus seemed to be in retreat after the installment of an additional, in its sedimentary composition, the Vézère drainage basin covers one fourth of the département of the Dordogne, the northernmost region of the Black Périgord. Before joining the Dordogne River near Limeuil, the Vézère flows in a south-westerly direction, at its centre point, the rivers course is marked by a series of meanders flanked by high limestone cliffs that determine the landscape. The Lascaux valley is located some distance from the concentrations of decorated caves and inhabited sites. This is the highest concentration in western Europe, the cave contains nearly 2,000 figures, which can be grouped into three main categories, animals, human figures, and abstract signs. The paintings contain no images of the landscape or the vegetation of the time. Charcoal may also have used but seemingly to a sparing extent. In other areas, the colour was applied by spraying the pigments by blowing the mixture through a tube, where the rock surface is softer, some designs have been incised into the stone
4.
World Heritage Site
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A World Heritage Site is a landmark which has been officially recognized by the United Nations, specifically by the United Nations Educational, Scientific and Cultural Organization. Sites are selected on the basis of having cultural, historical, scientific or some form of significance. UNESCO regards these sites as being important to the interests of humanity. The programme catalogues, names, and conserves sites of outstanding cultural or natural importance to the common culture, under certain conditions, listed sites can obtain funds from the World Heritage Fund. The program was founded with the Convention Concerning the Protection of the Worlds Cultural and Natural Heritage, since then,192 state parties have ratified the convention, making it one of the most adhered to international instruments. As of July 2016,1052 sites are listed,814 cultural,203 natural, in 1959, the governments of Egypt and Sudan requested UNESCO to assist their countries to protect and rescue the endangered monuments and sites. In 1960, the Director-General of UNESCO launched an appeal to the Member States for an International Campaign to Save the Monuments of Nubia, the campaign, which ended in 1980, was considered a success. The project cost $80 million, about $40 million of which was collected from 50 countries, the projects success led to other safeguarding campaigns, saving Venice and its lagoon in Italy, the ruins of Mohenjo-daro in Pakistan, and the Borobodur Temple Compounds in Indonesia. UNESCO then initiated, with the International Council on Monuments and Sites, the United States initiated the idea of cultural conservation with nature conservation. The International Union for Conservation of Nature developed similar proposals in 1968, the Convention came into force on 17 December 1975. As of June 2016, it has been ratified by 192 states, including 188 UN member states plus the Cook Islands, the Holy See, Niue, a country must first list its significant cultural and natural sites, the result is called the Tentative List. A country may not nominate sites that have not been first included on the Tentative List, next, it can place sites selected from that list into a Nomination File. The Nomination File is evaluated by the International Council on Monuments and Sites and these bodies then make their recommendations to the World Heritage Committee. There are ten selection criteria – a site must meet at least one of them to be included on the list, up to 2004, there were six criteria for cultural heritage and four criteria for natural heritage. In 2005, this was modified so there is now only one set of ten criteria. Nominated sites must be of outstanding value and meet at least one of the ten criteria. Thus, the Geneva Convention treaty promulgates, Article 53, PROTECTION OF CULTURAL OBJECTS AND OF PLACES OF WORSHIP. There are 1,052 World Heritage Sites located in 165 States Party, of these,814 are cultural,203 are natural and 35 are mixed properties
5.
Geographic coordinate system
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A geographic coordinate system is a coordinate system used in geography that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are chosen such that one of the numbers represents a vertical position. A common choice of coordinates is latitude, longitude and elevation, to specify a location on a two-dimensional map requires a map projection. The invention of a coordinate system is generally credited to Eratosthenes of Cyrene. Ptolemy credited him with the adoption of longitude and latitude. Ptolemys 2nd-century Geography used the prime meridian but measured latitude from the equator instead. Mathematical cartography resumed in Europe following Maximus Planudes recovery of Ptolemys text a little before 1300, in 1884, the United States hosted the International Meridian Conference, attended by representatives from twenty-five nations. Twenty-two of them agreed to adopt the longitude of the Royal Observatory in Greenwich, the Dominican Republic voted against the motion, while France and Brazil abstained. France adopted Greenwich Mean Time in place of local determinations by the Paris Observatory in 1911, the latitude of a point on Earths surface is the angle between the equatorial plane and the straight line that passes through that point and through the center of the Earth. Lines joining points of the same latitude trace circles on the surface of Earth called parallels, as they are parallel to the equator, the north pole is 90° N, the south pole is 90° S. The 0° parallel of latitude is designated the equator, the plane of all geographic coordinate systems. The equator divides the globe into Northern and Southern Hemispheres, the longitude of a point on Earths surface is the angle east or west of a reference meridian to another meridian that passes through that point. All meridians are halves of great ellipses, which converge at the north and south poles, the prime meridian determines the proper Eastern and Western Hemispheres, although maps often divide these hemispheres further west in order to keep the Old World on a single side. The antipodal meridian of Greenwich is both 180°W and 180°E, the combination of these two components specifies the position of any location on the surface of Earth, without consideration of altitude or depth. The grid formed by lines of latitude and longitude is known as a graticule, the origin/zero point of this system is located in the Gulf of Guinea about 625 km south of Tema, Ghana. To completely specify a location of a feature on, in, or above Earth. Earth is not a sphere, but a shape approximating a biaxial ellipsoid. It is nearly spherical, but has an equatorial bulge making the radius at the equator about 0. 3% larger than the radius measured through the poles, the shorter axis approximately coincides with the axis of rotation
6.
French language
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French is a Romance language of the Indo-European family. It descended from the Vulgar Latin of the Roman Empire, as did all Romance languages, French has evolved from Gallo-Romance, the spoken Latin in Gaul, and more specifically in Northern Gaul. Its closest relatives are the other langues doïl—languages historically spoken in northern France and in southern Belgium, French was also influenced by native Celtic languages of Northern Roman Gaul like Gallia Belgica and by the Frankish language of the post-Roman Frankish invaders. Today, owing to Frances past overseas expansion, there are numerous French-based creole languages, a French-speaking person or nation may be referred to as Francophone in both English and French. French is a language in 29 countries, most of which are members of la francophonie. As of 2015, 40% of the population is in Europe, 35% in sub-Saharan Africa, 15% in North Africa and the Middle East, 8% in the Americas. French is the fourth-most widely spoken mother tongue in the European Union, 1/5 of Europeans who do not have French as a mother tongue speak French as a second language. As a result of French and Belgian colonialism from the 17th and 18th century onward, French was introduced to new territories in the Americas, Africa, most second-language speakers reside in Francophone Africa, in particular Gabon, Algeria, Mauritius, Senegal and Ivory Coast. In 2015, French was estimated to have 77 to 110 million native speakers, approximately 274 million people are able to speak the language. The Organisation internationale de la Francophonie estimates 700 million by 2050, in 2011, Bloomberg Businessweek ranked French the third most useful language for business, after English and Standard Mandarin Chinese. Under the Constitution of France, French has been the language of the Republic since 1992. France mandates the use of French in official government publications, public education except in specific cases, French is one of the four official languages of Switzerland and is spoken in the western part of Switzerland called Romandie, of which Geneva is the largest city. French is the language of about 23% of the Swiss population. French is also a language of Luxembourg, Monaco, and Aosta Valley, while French dialects remain spoken by minorities on the Channel Islands. A plurality of the worlds French-speaking population lives in Africa and this number does not include the people living in non-Francophone African countries who have learned French as a foreign language. Due to the rise of French in Africa, the total French-speaking population worldwide is expected to reach 700 million people in 2050, French is the fastest growing language on the continent. French is mostly a language in Africa, but it has become a first language in some urban areas, such as the region of Abidjan, Ivory Coast and in Libreville. There is not a single African French, but multiple forms that diverged through contact with various indigenous African languages, sub-Saharan Africa is the region where the French language is most likely to expand, because of the expansion of education and rapid population growth
7.
Departments of France
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In the administrative divisions of France, the department is one of the three levels of government below the national level, between the administrative regions and the commune. There are 96 departments in metropolitan France and 5 overseas departments, each department is administered by an elected body called a departmental council. From 1800 to April 2015, they were called general councils, the departments were created in 1791 as a rational replacement of Ancien Régime provinces with a view to strengthen national unity, the title department is used to mean a part of a larger whole. Almost all of them were named after geographical features rather than after historical or cultural territories which could have their own loyalties. The earliest known suggestion of it is from 1764 in the writings of dArgenson and they have inspired similar divisions in many countries, some of them former French colonies. Most French departments are assigned a number, the Official Geographical Code. Some overseas departments have a three-digit number, the number is used, for example, in the postal code, and was until recently used for all vehicle registration plates. For example, inhabitants of Loiret might refer to their department as the 45 and this reform project has since been abandoned. The first French territorial departments were proposed in 1665 by Marc-René dArgenson to serve as administrative areas purely for the Ponts et Chaussées infrastructure administration, before the French Revolution, France gained territory gradually through the annexation of a mosaic of independent entities. By the close of the Ancien Régime, it was organised into provinces, during the period of the Revolution, these were dissolved, partly in order to weaken old loyalties. Their boundaries served two purposes, Boundaries were chosen to break up Frances historical regions in an attempt to erase cultural differences, Boundaries were set so that every settlement in the country was within a days ride of the capital of the department. This was a security measure, intended to keep the national territory under close control. This measure was directly inspired by the Great Terror, during which the government had lost control of rural areas far from any centre of government. The old nomenclature was carefully avoided in naming the new departments, most were named after an areas principal river or other physical features. Even Paris was in the department of Seine, the number of departments, initially 83, was increased to 130 by 1809 with the territorial gains of the Republic and of the First French Empire. Following Napoleons defeats in 1814-1815, the Congress of Vienna returned France to its pre-war size, in 1860, France acquired the County of Nice and Savoy, which led to the creation of three new departments. Two were added from the new Savoyard territory, while the department of Alpes-Maritimes was created from Nice, the 89 departments were given numbers based on their alphabetical order. The department of Bas-Rhin and parts of Meurthe, Moselle, Vosges and Haut-Rhin were ceded to the German Empire in 1871, following Frances defeat in the Franco-Prussian War
8.
Dordogne
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Dordogne is a department in southwestern France, with its prefecture in Périgueux. The department is located in the region of Nouvelle-Aquitaine between the Loire Valley and the Pyrenees, and is named after the great Dordogne river that runs through it and it roughly corresponds with the ancient county of Périgord. The county of Périgord dates back to when the area was inhabited by the Gauls and it was originally home to four tribes, the name for four tribes in the Gaulish language was Petrocore. The area eventually known as the county of Le Périgord. The Petrocores took part in the resistance against Rome, the earliest cluzeaux, artificial caves either above or below ground, can be found throughout the Dordogne. These subterranean refuges and lookout huts were large enough to shelter entire local populations, according to Julius Caesar the Gauls took refuge in these caves during the resistance. After Guienne province was transferred to the English Crown under the Plantagenets following the remarriage of Eleanor of Aquitaine in 1152, the county had been torn apart and, as a consequence, that modeled its physiognomy. During the calmer periods of the late 15th and early 16th centuries, the finest Gothic and Renaissance residences were built in Périgueux, Bergerac and Sarlat. In the countryside, the nobility had the majority of the more than 1200 chateaux, manors, at the time, Bergerac was one of the most powerful Huguenot strongholds, along with La Rochelle. and even Josephine Baker. A number of ruins have retained the memory of the tragedies took place within their walls. Several of the castles and châteaux are open to visitors and some of such as Bourdeilles and Mareuil. Saint-Léon-sur-Vézère, Connezac, Saint-Jean-de-Côle, La Roque-Gageac and many others are real jewels of architecture, as for the old quarters of Périgueux or Bergerac, restored and developed into pedestrian areas, they have regained their former charm. A number of towns, such as Brantôme, Issigeac, Eymet. A special mention should be made in respect to Sarlat. Dordogne is one of the original 83 departments created on 4 March 1790 during the French Revolution and it was included from the former province of Périgord, the county of Périgord. Its borders would continue to change over the subsequent decades, in 1793 the communes of Boisseuilh, Coubjours, Génis, Payzac, Saint-Cyr-les-Champagnes, Saint-Mesmin, Salagnac, Savignac, Saint-Trié and Teillots were transferred from Corrèze to Dordogne. In 1794 Dordogne ceded Cavarc to Lot-et-Garonne, later in 1794 Dordogne gained Parcoul from Charente-Inférieure. Following the restoration, in 1819, the commune of Bonrepos was suppressed and merged with the adjacent commune of Souillac in Lot, but at some stage the victim died, and following a trial four individuals identified as culpable were in turn condemned to die by guillotine
9.
Parietal art
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Parietal art is the archaeological term for artwork done on cave walls or large blocks of stone. One of the most famous examples of art is the Grotte Chauvet in France. Also called cave art, it refers to paintings, drawings, etchings, carvings. The purpose of these remains of the Paleolithic and other periods of art is not known. However, some theories suggest that these paintings were not solely for decoration as many of them were located in parts of caves that were not easily accessed, over 300 caves have been discovered in Spain and France that house parietal art from prehistoric times. Spectacular decorated caves have also found in Africa, Argentina, India, China, Australia. Cave art was discovered in the 19th century, long before absolute dating was possible, some scholars at the time developed a typology that was overthrown when AMS radiocarbon dating became available. Initial interpretations of the art at Lascaux and in other related grottoes suggested that the paintings and engravings were decorative, further analysis at the tail-end of the 20th century suggested that the cave art had deep links to prehistoric rituals promoting fertility and successful hunting. Chauvet Cave, Vallon-Pont-dArc, France — Discovered in 1994 and dating from 30,000 BCE, in the first, most pictures are red, while in the second, the animals are mostly black. The most spectacular images are the Horse Panel and the Panel of Lions, caves of Arcy-sur-Cure, Arcy-sur-Cure, Burgundy, France — Known of old for the cave itself, its parietal art has only been discovered in 1990. It is the second oldest after that of the Chauvet cave, Cosquer Cave, near Marseille, France — Discovered by the deep-sea diver Henri Cosquer in 1985, and dating from 25,000 BCE, the entrance to Cosquer cave is more than 100 feet below sea level. It contains hand stencils, charcoal drawings and about 100 polychrome paintings of horses, pech Merle Cave, Cabrerets, Midi-Pyrénées, France — Discovered in 1922, and dating from 25,000 BCE, Pech-Merle is famous for its dappled horses painted in charcoal and ochre on limestone. For details and photos, please see, Pech-Merle Cave Paintings and its cave art consists of over 700 painted images including numerous abstract symbols and engravings. The so-called polychrome chamber houses some 30 large animal pictures, mostly bison, vividly executed in red, for details and photos, please see, Altamira Cave Paintings. After its discovery, Lascaux quickly became a major tourist attraction, around 2000, the cave became filled with a fungus that many blamed on air conditioning, the use of high-powered lights, and too many visitors. The fungus had to be removed by hand, currently only a few scientific experts are allowed to work inside the cave. The most representative bacterium and fungus from the communities of a cave containing paleolithic paintings were isolated. Development was analyzed with and without supplemented nutrients, results showed that the assayed bacterium on natural substrate was able to develop best at in situ temperature and that the addition of organic nutrients and/or phosphate enhanced its growth
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Cave painting
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Cave paintings are painted drawings on cave walls or ceilings, mainly of prehistoric origin, to some 40,000 years ago in Eurasia. The exact purpose of the Paleolithic cave paintings is not known, evidence suggests that they were not merely decorations of living areas since the caves in which they have been found do not have signs of ongoing habitation. They are also located in areas of caves that are not easily accessible. Some theories hold that cave paintings may have been a way of communicating with others, the paintings are remarkably similar around the world, with animals being common subjects that give the most impressive images. Humans mainly appear as images of hands, mostly hand stencils made by blowing pigment on a hand held to the wall. The earliest known cave paintings/drawings of animals are at least 35,000 years old and are found in Pettakere cave on the island of Sulawesi in Indonesia, previously it was believed that the earliest paintings were in Europe. The earliest non-figurative rock art dates back to approximately 40,000 years ago, nearly 340 caves have now been discovered in France and Spain that contain art from prehistoric times. But subsequent technology has made it possible to date the paintings by sampling the pigment itself, the choice of subject matter can also indicate chronology. For instance, the reindeer depicted in the Spanish cave of Cueva de las Monedas places the drawings in the last Ice Age. The oldest date given to a cave painting is now a pig that has a minimum age of 35,400 years old at Pettakere cave in Sulawesi. Indonesian and Australian scientists have dated other non-figurative paintings on the walls to be approximately 40,000 years old, the method they used to confirm this was dating the age of the stalactites that formed over the top of the paintings. The art is similar in style and method to that of the Indonesian caves as there were also hand stencils and this date coincides with the earliest known evidence for Homo sapiens in Europe. Because of the cave arts age, some scientists have conjectured that the paintings may have made by Neanderthals. The earliest known European figurative cave paintings are those of Chauvet Cave in France and these paintings date to earlier than 30,000 BCE according to radiocarbon dating. Some researchers believe the drawings are too advanced for this era, the radiocarbon dates from these samples show that there were two periods of creation in Chauvet,35,000 years ago and 30,000 years ago. In 2009, cavers discovered drawings in Coliboaia Cave in Romania, an initial dating puts the age of an image in the same range as Chauvet, about 32,000 years old. Some caves probably continued to be painted over a period of thousands of years. This was created roughly between 10,000 and 5,500 years ago, and painted in rock shelters under cliffs or shallow caves, though individual figures are less naturalistic, they are grouped in coherent grouped compositions to a much greater degree
11.
Upper Paleolithic
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The Upper Paleolithic is the third and last subdivision of the Paleolithic or Old Stone Age. Very broadly, it dates to between 50,000 and 10,000 years ago, roughly coinciding with the appearance of behavioral modernity, modern humans are believed to have emerged about 195,000 years ago in Africa. Although these humans were modern in anatomy, their lifestyle changed very little from their contemporaries, such as Homo erectus, about 50,000 years ago, there was a marked increase in the diversity of artifacts. In Africa, bone artifacts and the first art appear in the archeological record, between 45,000 and 43,000 years ago, this new tool technology spread with human migration to Europe. The new technology generated an explosion of modern humans which is believed to have contributed to the extinction of the Neanderthals. The Upper Paleolithic has the earliest known evidence of organized settlements, in the form of campsites, artistic work blossomed, with cave painting, petroglyphs, carvings and engravings on bone or ivory. The first evidence of fishing is also noted, from artifacts in places such as Blombos cave in South Africa. More complex social groupings emerged, supported by more varied and reliable food sources and this probably contributed to increasing group identification or ethnicity. By 50, 000–40,000 BP, the first humans set foot in Australia, by 45,000 BP, humans lived at 61° north latitude in Europe. By 30,000 BP, Japan was reached, and by 27,000 BP humans were present in Siberia above the Arctic Circle, at the end of the Upper Paleolithic, a group of humans crossed the Bering land bridge and quickly expanded throughout North and South America. Both Homo erectus and Neanderthals used the same crude stone tools, archaeologist Richard G. Klein, who has worked extensively on ancient stone tools, describes the stone tool kit of archaic hominids as impossible to categorize. It was as if the Neanderthals made stone tools, and were not much concerned about their final forms and he argues that almost everywhere, whether Asia, Africa or Europe, before 50,000 years ago all the stone tools are much alike and unsophisticated. These new stone-tool types have been described as being distinctly differentiated from each other, the invaders, commonly referred to as the Cro-Magnons, left many sophisticated stone tools, carved and engraved pieces on bone, ivory and antler, cave paintings and Venus figurines. The Neanderthals continued to use Mousterian stone tool technology and possibly Chatelperronian technology and these tools disappeared from the archeological record at around the same time the Neanderthals themselves disappeared from the fossil record, about 40,000 years ago. Settlements were often located in valley bottoms, possibly associated with hunting of passing herds of animals. Hunting was important, and caribou/wild reindeer may well be the species of single greatest importance in the anthropological literature on hunting. Technological advances included significant developments in flint tool manufacturing, with industries based on fine blades rather than simpler and shorter flakes, burins and racloirs were used to work bone, antler and hides. Advanced darts and harpoons also appear in period, along with the fish hook, the oil lamp, rope
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Magdalenian
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The Magdalenian refers to one of the later cultures of the Upper Paleolithic in western Europe, dating from around 17,000 to 12,000 years ago. It is named after the site of La Madeleine, a rock shelter located in the Vézère valley, commune of Tursac. The culture was geographically widespread, and later Magdalenian sites have found from Portugal in the west to Poland in the east. It is the epoch of Gabriel de Mortillets cave chronology system. The Magdalenian epoch was a one, represented by numerous stations, whose contents show progress in the arts. It was characterized by a cold and dry climate, the existence of humans in association with the reindeer, the use of bone and ivory for various implements, already begun in the preceding Solutrian epoch, was much increased, and the period is essentially a Bone age. The bone instruments are varied, spear-points, harpoon-heads, borers, hooks. Most remarkable is the evidence La Madeleine affords of prehistoric art, numbers of bones, reindeer antlers and animal teeth were found, with rude pictures, carved or etched on them, of seals, fishes, reindeer, mammoths and other creatures. The man is naked which, together with the snake, suggests a warm climate, the fauna of the Madelenian epoch seems, indeed, to have included tigers and other tropical species side by side with reindeer, blue foxes, Arctic hares and other polar creatures. Madelenian humans appears to have been of low stature, dolichocephalic, with low retreating forehead, the culture spans approximatively from 17,000 to 12,000 BP, toward the end of the last ice age. The Magdalenian tool culture is characterised by regular blade industries struck from carinated cores, typologically, the Magdalenian is divided into six phases which are generally agreed to have chronological significance. Similarly, finds from the forest of Beauregard near Paris often have been suggested as belonging to the earliest Magdalenian, the earliest Magdalenian sites are all found in France. The Epigravettian is a similar culture appearing at the time in Italy, the Balkans, Moldavia, Romania. The later phases of the Magdalenian are also synonymous with the human re-settlement of north-western Europe after the Last Glacial Maximum during the Late Glacial Maximum, research in Switzerland, southern Germany, and Belgium has provided AMS radiocarbon dating to support this. Being hunter gatherers, Magdalenians did not simply re-settle permanently in north-west Europe, however, as they often followed herds, by the end of the Magdalenian, the lithic technology shows a pronounced trend toward increased microlithisation. The bone harpoons and points have the most distinctive chronological markers within the typological sequence, as well as flint tools, the Magdalenians are best known for their elaborate worked bone, antler, and ivory that served both functional and aesthetic purposes, including perforated batons. Cave sites such as the world famous Lascaux contain the best known examples of Magdalenian cave art, in northern Spain and south west France this tool culture was superseded by the Azilian culture. In northern Europe a slightly different situation exists, with different variants of the Tjongerian techno-complex following it
13.
UNESCO
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The United Nations Educational, Scientific and Cultural Organization is a specialized agency of the United Nations based in Paris. It is the heir of the League of Nations International Committee on Intellectual Cooperation, UNESCO has 195 member states and nine associate members. Most of its offices are cluster offices covering three or more countries, national and regional offices also exist. UNESCO pursues its objectives through five major programs, education, natural sciences, social/human sciences, culture and it is also a member of the United Nations Development Group. UNESCO and its mandate for international cooperation can be traced back to a League of Nations resolution on 21 September 1921, on 18 December 1925, the International Bureau of Education began work as a non-governmental organization in the service of international educational development. However, the work of predecessor organizations was largely interrupted by the onset of World War II. On 30 October 1943, the necessity for an organization was expressed in the Moscow Declaration, agreed upon by China, the United Kingdom, the United States. This was followed by the Dumbarton Oaks Conference proposals of 9 October 1944, a prominent figure in the initiative for UNESCO was Rab Butler, the Minister of Education for the United Kingdom. At the ECO/CONF, the Constitution of UNESCO was introduced and signed by 37 countries, the Preparatory Commission operated between 16 November 1945, and 4 November 1946—the date when UNESCOs Constitution came into force with the deposit of the twentieth ratification by a member state. The first General Conference took place between 19 November to 10 December 1946, and elected Dr. Julian Huxley to Director-General and this change in governance distinguished UNESCO from its predecessor, the CICI, in how member states would work together in the organizations fields of competence. In 1956, the Republic of South Africa withdrew from UNESCO claiming that some of the organizations publications amounted to interference in the racial problems. South Africa rejoined the organization in 1994 under the leadership of Nelson Mandela, UNESCOs early work in the field of education included the pilot project on fundamental education in the Marbial Valley, Haiti, started in 1947. This project was followed by missions to other countries, including, for example. In 1948, UNESCO recommended that Member States should make free primary education compulsory, in 1990, the World Conference on Education for All, in Jomtien, Thailand, launched a global movement to provide basic education for all children, youths and adults. Ten years later, the 2000 World Education Forum held in Dakar, Senegal, UNESCOs early activities in culture included, for example, the Nubia Campaign, launched in 1960. The purpose of the campaign was to move the Great Temple of Abu Simbel to keep it from being swamped by the Nile after construction of the Aswan Dam, during the 20-year campaign,22 monuments and architectural complexes were relocated. This was the first and largest in a series of campaigns including Mohenjo-daro, Fes, Kathmandu, Borobudur, the organizations work on heritage led to the adoption, in 1972, of the Convention concerning the Protection of the World Cultural and Natural Heritage. The World Heritage Committee was established in 1976 and the first sites inscribed on the World Heritage List in 1978, since then important legal instruments on cultural heritage and diversity have been adopted by UNESCO member states in 2003 and 2005
14.
Lichen
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A lichen is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi in a symbiotic relationship. The combined lichen has properties different from those of its component organisms, Lichens come in many colours, sizes, and forms. The properties are sometimes plant-like, but lichens are not plants, Lichens may have tiny, leafless branches, flat leaf-like structures, flakes that lie on the surface like peeling paint, or other growth forms. A macrolichen is a lichen that is either bush-like or leafy, here, macro and micro do not refer to size, but to the growth form. Common names for lichens may contain the word moss, and lichens may superficially look like and grow with mosses, Lichens do not have roots that absorb water and nutrients as plants do, but like plants, they produce their own food by photosynthesis. When they grow on plants, they do not live as parasites, Lichens occur from sea level to high alpine elevations, in many environmental conditions, and can grow on almost any surface. Lichens are abundant growing on bark, leaves, mosses, on other lichens and they grow on rock, walls, gravestones, roofs, exposed soil surfaces, and in the soil as part of a biological soil crust. Different kinds of lichens have adapted to survive in some of the most extreme environments on Earth, arctic tundra, hot dry deserts, rocky coasts and they can even live inside solid rock, growing between the grains. It is estimated that 6% of Earths land surface is covered by lichen, there are about 20,000 known species of lichens. Some lichens have lost the ability to reproduce sexually, yet continue to speciate, Lichens may be long-lived, with some considered to be among the oldest living things. They are among the first living things to grow on fresh rock exposed after an event such as a landslide, the long life-span and slow and regular growth rate of some lichens can be used to date events. In American English, lichen is pronounced the same as the verb liken, in British English, both this pronunciation and one rhyming with kitchen /ˈlɪtʃən/) are used. Lichens grow in a range of shapes and forms. The shape of a lichen is determined by the organization of the fungal filaments. The nonreproductive tissues, or vegetative body parts, is called the thallus, Lichens are grouped by thallus type, since the thallus is usually the most visually prominent part of the lichen. Thallus growth forms typically correspond to a few basic internal structure types, Common names for lichens often come from a growth form or color that is typical of a lichen genus. When a crustose lichen gets old, the center may start to crack up like old-dried paint, old-broken asphalt paving and this is called being rimose or areolate, and the island pieces separated by the cracks are called areolas. The areolas appear separated, but are connected by an underlying prothallus or hypothallus, when a crustose lichen grows from a center and appears to radiate out, it is called crustose placodioid
15.
Ascomycota
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Ascomycota is a division or phylum of the kingdom Fungi that, together with the Basidiomycota, form the subkingdom Dikarya. Its members are known as the sac fungi or ascomycetes. They are the largest phylum of Fungi, with over 64,000 species, the defining feature of this fungal group is the ascus, a microscopic sexual structure in which nonmotile spores, called ascospores, are formed. However, some species of the Ascomycota are asexual, meaning that they do not have a sexual cycle, the ascomycetes are a monophyletic group, i. e. it contains all descendants of one common ancestor. Familiar examples of sac fungi include morels, truffles, brewers yeast and bakers yeast, dead mans fingers, the fungal symbionts in the majority of lichens such as Cladonia belong to the Ascomycota. There are many plant-pathogenic ascomycetes, including apple scab, rice blast, the fungi, black knot. Several species of ascomycetes are biological model organisms in laboratory research, most famously, Neurospora crassa, several species of yeasts, and Aspergillus species are used in many genetics and cell biology studies. Penicillium species on cheeses and those producing antibiotics for treating infectious diseases are examples of taxa that belong to the Ascomycota. They are fungi which produce microscopic spores inside special, elongated cells or sacs, known as asci, Asexual reproduction, Asexual reproduction is the dominant form of propagation in the Ascomycota, and is responsible for the rapid spread of these fungi into new areas. Asexual reproduction of ascomycetes is very diverse from both structural and functional points of view, the most important and general is production of conidia, but chlamydospores are also frequently produced. Furthermore, Ascomycota also reproduce asexually through budding, 1) Conidia formation, Asexual reproduction may occur through vegetative reproductive spores, the conidia. Asexual, non-motile haploid spore of a fungus, which is named after the Greek word for dust, conia and they are typically formed at the ends of specialized hyphae, the conidiophores. Depending on the species they may be dispersed by wind or water, conidiophores may simply branch off from the mycelia or they may be formed in fruiting bodies. The hypha that creates the sporing tip can be similar to the normal hyphal tip. The most common differentiation is the formation of a bottle shaped cell called a phialide, as all of these asexual structures are not single hyphae. In some groups, the conidiophores are aggregated to form a thick structure, in the order Moniliales, all of them are single hyphae with the exception of the aggregations, termed as coremia or synnema. These produce structures rather like corn-stokes, with many conidia being produced in a mass from the aggregated conidiophores, the diverse conidia and conidiophores sometimes develop in asexual sporocarps with different characteristics. Some species of Ascomycetes form their structures within plant tissue, either as parasite or saprophytes and these fungi have evolved more complex asexual sporing structures, probably influenced by the cultural conditions of plant tissue as a substrate
16.
Stachybotrys
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Stachybotrys is a genus of molds, hyphomycetes or asexually reproducing, filamentous fungi. Historically, it was considered related to the genus Memnoniella. Recently, the synonymy of the two genera is generally accepted, most Stachybotrys species inhabit materials rich in cellulose. The genus has a distribution, and contains about 50 species. The name comes from the Greek words stakhus or stachy and botrus, according to the Center for Disease Control and Prevention, The term toxic mold is not accurate. While certain molds are toxigenic, meaning they can produce toxins, hazards presented by molds that may produce mycotoxins should be considered the same as other common molds which can grow in your house. The CDC recommends using soap and water or bleach to remove the mold, subsequent and extensive reanalysis of the cases by the United States Centers for Disease Control and Prevention have failed to find any link between the deaths and the mold exposure. Jong & Davis Stachybotrys alternans Bonord, Stachybotrys breviuscula McKenzie Stachybotrys chartarum S. Hughes Stachybotrys chlorohalonata B. Andersen & Thrane Stachybotrys cylindrospora C. N, jensen Stachybotrys dichroa Grove Stachybotrys elegans W. Gams Stachybotrys eucylindrospora D. W. Li Stachybotrys freycinetiae McKenzie Stachybotrys kampalensis Hansf. Stachybotrys kapiti Whitton, McKenzie & K. D. Hyde Stachybotrys longispora Matsush, jong & E. E. Davis Stachybotrys nephrodes McKenzie Stachybotrys nephrospora Hansf. Ellis Stachybotrys parvispora S. Hughes Stachybotrys ruwenzoriensis Matsush, agarwal & N. D. Sharma Stachybotrys sinuatophora Matsush. Stachybotrys suthepensis Photita, P. Lumyong, K. D. Hyde & McKenzie Stachybotrys theobromae Hansf
17.
Dordogne (river)
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The Dordogne is a river in south-central and southwest France. The Dordogne and its watershed were designated Biosphere Reserve by UNESCO on July 112012, contrary to appearances, the name of the Dordogne is not a recent word resulting from the frequent names of the Dore and the Dogne. It comes from an ancient Durānius, derived from a Pre-Celtic root dur-, dor-, the medieval forms adopted a redoubled suffix -ononia, Dorononia fluvius, Dornonia that evolves in Dordonia by a phenomenon of dissimilation, giving the impression of an etymology *Dore-Dogne. The Dordogne is one of the few rivers in the world that exhibit the phenomenon of a tidal bore, the upper valley of the Dordogne is a series of deep gorges. The cliffs, steep banks, fast flowing water and high bridges attract both walkers and drivers, in several places the river is dammed to form long, deep lakes. Camp sites and holiday homes have proliferated wherever the valley floor is wide enough to accommodate them, below Argentat and around Beaulieu-sur-Dordogne, the valley widens to accommodate fertile farmland, well-watered pasture and orchards. In the towns, which are major tourist attractions because of their history and architecture, in Périgord, the valley widens further to encompass one of Frances main gastronomic regions, with vineyards, poultry farms and truffle-rich woodlands. The main season for tourism in the Valley of the Dordogne is from June to September, with July, the lifestyle and culture of the Dordogne valley attract both visitors and incomers from all over France, but also from many other countries, particularly Britain and Germany. The Dordogne at the Sandre database The Dordogne Valley in the Lot department The Dordogne Valley UNESCO Biosphere Reserve
18.
Karst
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Karst topography is a landscape formed from the dissolution of soluble rocks such as limestone, dolomite, and gypsum. It is characterized by underground drainage systems with sinkholes and caves and it has also been documented for more weathering-resistant rocks, such as quartzite, given the right conditions. Subterranean drainage may limit surface water, with few to no rivers or lakes, the English word karst was borrowed from German Karst in the late 19th century. The German word came into use before the 19th century, according to the prevalent interpretation, the term is derived from the German name for the Karst region, a limestone plateau above the city of Trieste in the northern Adriatic. Scholars disagree, however, on whether the German word was borrowed from Slovene, the Slovene common noun kras was first attested in the 18th century, and the adjective form kraški in the 16th century. The Slovene words arose through metathesis from the reconstructed form *korsъ, ultimately, the word is of Mediterranean origin, believed to derive from some Romanized Illyrian base. It has been suggested that the word may derive from the Proto-Indo-European root karra- rock, the name may also be connected to the oronym Karsádios oros cited by Ptolemy, and perhaps also to Latin Carusardius. The development of karst occurs whenever acidic water starts to break down the surface of bedrock near its cracks, as the bedrock continues to degrade, its cracks tend to get bigger. As time goes on, these fractures will become wider, if this underground drainage system does form, it will speed up the development of karst formations there because more water will be able to flow through the region, giving it more erosive power. The carbonic acid that causes karstic features is formed as rain passes through the atmosphere picking up carbon dioxide, once the rain reaches the ground, it may pass through soil that can provide much more CO2 to form a weak carbonic acid solution, which dissolves calcium carbonate. The oxidation of sulfides leading to the formation of acid can also be one of the corrosion factors in karst formation. As oxygen -rich surface waters seep into deep anoxic karst systems, they bring oxygen, sulfuric acid then reacts with calcium carbonate, causing increased erosion within the limestone formation. This chain of reactions is, This reaction chain forms gypsum, the karstification of a landscape may result in a variety of large- or small-scale features both on the surface and beneath. On exposed surfaces, small features may include solution flutes, runnels, limestone pavement, medium-sized surface features may include sinkholes or cenotes, vertical shafts, foibe, disappearing streams, and reappearing springs. Large-scale features may include limestone pavements, poljes, and karst valleys, mature karst landscapes, where more bedrock has been removed than remains, may result in karst towers, or haystack/eggbox landscapes. Beneath the surface, complex underground systems and extensive caves. Some of the most dramatic of these formations can be seen in Thailands Phangnga Bay, calcium carbonate dissolved into water may precipitate out where the water discharges some of its dissolved carbon dioxide. Rivers which emerge from springs may produce tufa terraces, consisting of layers of calcite deposited over extended periods of time, in caves, a variety of features collectively called speleothems are formed by deposition of calcium carbonate and other dissolved minerals
19.
Megaloceros
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Megaloceros is an extinct genus of deer whose members lived throughout Eurasia from the late Pliocene to the Late Pleistocene and were important herbivores during the Ice Ages. The largest species, Megaloceros giganteus, vernacularly known as the Irish Elk or Giant elk, is also the best known, most members of the genus were extremely large animals that favoured meadows or open woodlands, with most species averaging slightly below 2 metres at the withers. The various species of the Cretan genus Candiacervus – the smallest of which, although sometimes synonymized with Megaloceros, Praemegaceros and Megaceroides are apparently generically distinct. M. stavropolensis Early Pleistocene species from Southwestern Russia, M. luochuanensis Early to Mid-Pleistocene species in the Shaanxi Loess of China. M. antecedens Very similar to M. giganteus, to the point where it is regarded as a paleosubspecies of the latter. The antlers were more compact, and the tines near the base large, M. pachyosteus Mid-Pleistocene China and Japan. M. savini Mid-Pleistocene species, slightly larger than a caribou, first fossils found near Sainte Savine and its antlers were straight, with thorn-like prongs. The lowermost prongs near the base were palmate, M. giganteus Largest, best known, and among the last species of the genus, about 2 m at the shoulders. Lived throughout Eurasia, from Ireland to China during the last Ice Age, molecular Phylogenetics and Evolution 40, 285–291. Supplementary data 1, DOC fulltext Supplementary data 2, DOC fulltext Supplementary data 3, DOC fulltext Lister, the nomenclature of the giant deer. Edwards, C. J. Nock, D. A. Bunce, M. van Pijlen, the phylogenetic position of the giant deer Megaloceros giganteus. Nature PMID16148942 doi,10. 1038/nature04134 PDF fulltext Supplementary information
20.
Ochre
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Ochre (/ˈoʊkər/ OH-kər, from Greek, ὠχρός, ōkhrós, or ocher, is a natural earth pigment containing hydrated iron oxide, which ranges in color from yellow to deep orange or brown. It is also the name of the produced by this pigment. A variant of ochre containing an amount of hematite, or dehydrated iron oxide, has a reddish tint known as red ochre. Ochre is a family of pigments, which includes yellow ochre, red ochre, purple ochre, sienna. The major ingredient of all the ochres is iron oxide-hydroxide, known as limonite, which gives them a yellow color. Yellow ochre, FeO·nH 2O, is a hydrated iron hydroxide also called gold ochre Red ochre, Fe 2O3, takes its color from the mineral hematite. Purple ochre, is identical to red ochre chemically but of a different hue caused by different light diffraction properties associated with an average particle size. Brown ochre, also FeO, is a hydrated iron oxide. Sienna contains both limonite and an amount of manganese oxide, which makes it darker than ochre. Umber pigments contain a proportion of manganese which make them a dark brown. When natural sienna and umber pigments are heated, they are dehydrated and some of the limonite is transformed into hematite, giving them more reddish colors, called burnt sienna and burnt umber. Ochres are non-toxic, and can be used to make an oil paint that dries quickly, modern ochre pigments often are made using synthetic iron oxide. Pigments which use natural ochre pigments indicate it with the name PY-43 on the label, pieces of ochre engraved with abstract designs have been found at the site of the Blombos Cave in South Africa, dated to around 75,000 years ago. In Wales, the paleolithic burial called the Red Lady of Paviland from its coating of red ochre has been dated to around 33,000 years before present. Paintings of animals made with red and yellow ochre pigments have been found in sites at Pech Merle in France. The cave of Lascaux has an image of a horse colored with yellow estimated to be 17,300 years old. In Ancient Egypt, yellow was associated with gold, which was considered to be eternal, the skin and bones of the gods were believed to be made of gold. The Egyptians used yellow extensively in tomb painting, though occasionally they used orpiment
21.
Hematite
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Hematite, also spelled as haematite, is the mineral form of iron oxide, one of several iron oxides. Hematite crystallizes in the lattice system, and it has the same crystal structure as ilmenite. Hematite and ilmenite form a solid solution at temperatures above 950 °C. Hematite is colored black to steel or silver-gray, brown to reddish brown and it is mined as the main ore of iron. Varieties include kidney ore, martite, iron rose and specularite, while the forms of hematite vary, they all have a rust-red streak. Hematite is harder than iron, but much more brittle. Maghemite is a hematite- and magnetite-related oxide mineral, huge deposits of hematite are found in banded iron formations. Gray hematite is typically found in places that can have still standing water or mineral hot springs, the mineral can precipitate out of water and collect in layers at the bottom of a lake, spring, or other standing water. Hematite can also occur without water, however, usually as the result of volcanic activity, the name hematite is derived from the Greek word for blood αἷμα haima, due to the red coloration found in some varities of hematite. The color of hematite lends itself to use as a pigment, ochre is a clay that is colored by varying amounts of hematite, varying between 20% and 70%. Red ochre contains unhydrated hematite, whereas yellow ochre contains hydrated hematite, the principal use of ochre is for tinting with a permanent color. The red chalk writing of this mineral was one of the earliest in the history of humans, the powdery mineral was first used 164,000 years ago by the Pinnacle-Point man possibly for social purposes. Hematite residues are found in graves from 80,000 years ago. Near Rydno in Poland and Lovas in Hungary red chalk mines have been found that are from 5000 BC, rich deposits of hematite have been found on the island of Elba that have been mined since the time of the Etruscans. Adding to the surprise was a transition with a decrease in temperature at around 260 K to a phase with no net magnetic moment. The disappearance of the moment with a decrease in temperature at 260 K is caused by a change in the anisotropy which causes the moments to align along the c axis, in this configuration, spin canting does not reduce the energy. The magnetic properties of bulk hematite differ from their nanoscale counterparts, for example, the Morin transition temperature of hematite decreases with a decrease in the particle size. Two other end-members are referred to as protohematite and hydrohematite, enhanced magnetic coercivities for hematite have been achieved by dry-heating a 2-line ferrihydrite precursor prepared from solution
22.
Goethite
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Goethite, is an iron bearing hydroxide mineral of the diaspore group, is found in soil and other low-temperature environments. Goethite has been known since ancient times for its use as a pigment. Evidence has been found of its use in paint pigment samples taken from the caves of Lascaux in France and it was first described in 1806 based on samples found in the Hollertszug Mine in Herdorf, Germany. The mineral was named after the German polymath and poet Johann Wolfgang von Goethe, in 2003, nanoparticulate authigenic goethite was shown to be the most common diagenetic iron oxyhydroxide in both marine and lake sediments. Goethite is an iron oxyhydroxide containing ferric iron and it is the main component of rust and bog iron ore. Goethites hardness ranges from 5.0 to 5.5 on the Mohs Scale, the mineral forms prismatic needle-like crystals, but is more typically massive. Feroxyhyte and lepidocrocite are both polymorphs of the iron oxyhydroxide FeO, although they have the same chemical formula as goethite, their different crystalline structures make them distinct minerals. Goethite often forms through the weathering of other minerals, and thus is a common component of soils. The formation of goethite is marked by the state change of Fe2+ to Fe3+. Because of this state change, goethite is commonly seen as a pseudomorph. As iron-bearing minerals are brought to the zone of oxidation within the soil and it may also be precipitated by groundwater or in other sedimentary conditions, or form as a primary mineral in hydrothermal deposits. Goethite has also found to be produced by the excretion processes of certain bacteria types. Goethite is found all over the planet, usually in the form of concretions, stalactitic formations, oolites and it is also a very common pseudomorph. It is frequently encountered in the areas at the head of spring waters, on cave floors. The boxworks or gossan resulting from the oxidation of ore deposits is formed of goethite along with other iron oxides. Significant deposits of goethite are found in England, Australia, Cuba, and Michigan, Minnesota, Missouri, Colorado, Alabama, Georgia, Virginia, and Tennessee, and Florida caves in the United States. In 2015 it was reported that limpets teeth have goethite fibres in them and its main modern use is as an iron ore, being referred to as brown iron ore. It does have some use as an earth pigment
23.
Groundwater
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Groundwater is the water present beneath Earths surface in soil pore spaces and in the fractures of rock formations. A unit of rock or a deposit is called an aquifer when it can yield a usable quantity of water. The depth at which pore spaces or fractures and voids in rock become completely saturated with water is called the water table. Groundwater is recharged from, and eventually flows to, the naturally, natural discharge often occurs at springs and seeps. Groundwater is also withdrawn for agricultural, municipal, and industrial use by constructing and operating extraction wells. The study of the distribution and movement of groundwater is hydrogeology, Groundwater is hypothesized to provide lubrication that can possibly influence the movement of faults. It is likely that much of Earths subsurface contains some water, Groundwater may not be confined only to Earth. The formation of some of the landforms observed on Mars may have influenced by groundwater. There is also evidence that water may also exist in the subsurface of Jupiters moon Europa. Groundwater is often cheaper, more convenient and less vulnerable to pollution than surface water, therefore, it is commonly used for public water supplies. For example, groundwater provides the largest source of water storage in the United States. Underground reservoirs contain far more water than the capacity of all surface reservoirs and lakes in the US, many municipal water supplies are derived solely from groundwater. Polluted groundwater is less visible, but more difficult to clean up, than pollution in rivers, Groundwater pollution most often results from improper disposal of wastes on land. An aquifer is a layer of substrate that contains and transmits groundwater. When water can flow directly between the surface and the zone of an aquifer, the aquifer is unconfined. The deeper parts of unconfined aquifers are more saturated since gravity causes water to flow downward. The upper level of this layer of an unconfined aquifer is called the water table or phreatic surface. Below the water table, where in general all pore spaces are saturated with water, is the phreatic zone, substrate with low porosity that permits limited transmission of groundwater is known as an aquitard
24.
Clay
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Clay is a fine-grained natural rock or soil material that combines one or more clay minerals with traces of metal oxides and organic matter. Geologic clay deposits are composed of phyllosilicate minerals containing variable amounts of water trapped in the mineral structure. Clays are plastic due to water content and become hard, brittle. Depending on the content in which it is found, clay can appear in various colours from white to dull grey or brown to deep orange-red. Although many naturally occurring deposits include both silts and clay, clays are distinguished from other fine-grained soils by differences in size, silts, which are fine-grained soils that do not include clay minerals, tend to have larger particle sizes than clays. There is, however, some overlap in size and other physical properties. The distinction between silt and clay varies by discipline, geologists and soil scientists usually consider the separation to occur at a particle size of 2 µm, sedimentologists often use 4–5 μm, and colloid chemists use 1 μm. Geotechnical engineers distinguish between silts and clays based on the plasticity properties of the soil, as measured by the soils Atterberg limits, ISO14688 grades clay particles as being smaller than 2 μm and silt particles as being larger. These solvents, usually acidic, migrate through the rock after leaching through upper weathered layers. In addition to the process, some clay minerals are formed through hydrothermal activity. There are two types of deposits, primary and secondary. Primary clays form as residual deposits in soil and remain at the site of formation, secondary clays are clays that have been transported from their original location by water erosion and deposited in a new sedimentary deposit. Clay deposits are associated with very low energy depositional environments such as large lakes. Depending on the source, there are three or four main groups of clays, kaolinite, montmorillonite-smectite, illite, and chlorite. Chlorites are not always considered to be a clay, sometimes being classified as a group within the phyllosilicates. There are approximately 30 different types of clays in these categories. Varve is clay with visible annual layers, which are formed by deposition of those layers and are marked by differences in erosion. This type of deposit is common in glacial lakes
25.
Paint
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Paint is any liquid, liquefiable, or mastic composition that, after application to a substrate in a thin layer, converts to a solid film. It is most commonly used to protect, color, or provide texture to objects, Paint can be made or purchased in many colors—and in many different types, such as watercolor, synthetic, etc. Paint is typically stored, sold, and applied as a liquid, in 2001 and 2004, South African archeologists reported finds in Blombos Cave of a 100, 000-year-old human-made ochre-based mixture that could have been used like paint. Further excavation in the cave resulted in the 2011 report of a complete toolkit for grinding pigments. Cave paintings drawn with red or yellow ochre, hematite, manganese oxide, ancient colored walls at Dendera, Egypt, which were exposed for years to the elements, still possess their brilliant color, as vivid as when they were painted about 2,000 years ago. The Egyptians mixed their colors with a substance, and applied them separately from each other without any blending or mixture. They appear to have used six colors, white, black, blue, red, yellow and they first covered the area entirely with white, then traced the design in black, leaving out the lights of the ground color. They used minium for red, and generally of a dark tinge, pliny mentions some painted ceilings in his day in the town of Ardea, which had been done prior to the foundation of Rome. He expresses great surprise and admiration at their freshness, after the lapse of so many centuries, Paint was made with the yolk of eggs and therefore, the substance would harden and adhere to the surface it was applied to. Pigment was made from plants, sand, and different soils, Most paints used either oil or water as a base. The process was done by hand by the painters and exposed them to lead poisoning due to the white-lead powder, in 1718, Marshall Smith invented a Machine or Engine for the Grinding of Colours in England. It is not known precisely how it operated, but it was a device that increased the efficiency of pigment grinding dramatically. By the proper onset of the Industrial Revolution, paint was being ground in steam-powered mills, interior house painting increasingly became the norm as the 19th century progressed, both for decorative reasons and because the paint was effective in preventing the walls rotting from damp. Linseed oil was also used as an inexpensive binder. In 1866, Sherwin-Williams in the United States opened as a large paint-maker and it was not until the stimulus of World War II created a shortage of linseed oil in the supply market that artificial resins, or alkyds, were invented. Cheap and easy to make, they held the color well. The vehicle is composed of the binder, or, if it is necessary to thin the binder with a diluent like solvent or water, it is the combination of binder + diluent. In this case, once the paint has dried or cured very nearly all of the diluent has evaporated, thus, an important quantity in coatings formulation is the vehicle solids, sometimes called the resin solids of the formula
26.
Equus (genus)
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Equus is a genus of mammals in the family Equidae, which includes horses, asses, and zebras. Within Equidae, Equus is the only recognized extant genus, comprising seven living species, the term equine refers to any member of this genus, including horses. Like Equidae more broadly, Equus has numerous species known only from fossils. The genus most likely originated in North America and spread quickly to the Old World, Equines are odd-toed ungulates with slender legs, long heads, relatively long necks, manes and long tails. All species are herbivorous, and mostly grazers with simpler digestive systems than ruminants, while the domestic horse and donkey exist worldwide, wild equine populations are limited to Africa and Asia. In both systems, females take care of their offspring but males may play a role as well, Equines communicate with each other both visually and vocally. Human activities have threatened wild equine populations and out of the seven living species, only the plains zebra remains widespread and abundant. The word equus is Latin for horse, and is cognate with the Greek ἵππος, horse, and Mycenaean Greek i-qo /ikkʷos/, the genus Equus was first described by Carl Linnaeus in 1758. It is the only recognized extant genus in the family Equidae, the first equids were small, dog-sized mammals adapted for browsing on shrubs during the Eocene, around 54 million years ago. These animals had three toes on the feet and four on the front feet with small hooves in place of claws. Equids developed into larger, three-toed animals during the Oligocene and Miocene, from there, the tridactyl toes became progressively smaller through the Pleistocene until the emergence of the single-toed Equus. The genus Equus, which all extant equines, is believed to have evolved from Dinohippus. One of the oldest species is Equus simplicidens, described as zebra-like with a head shape. The oldest material to date was found in Idaho, USA, the genus appears to have spread quickly into the Old World, with the similarly aged E. livenzovensis documented from western Europe and Russia. Molecular phylogenies indicate that the most recent common ancestor of all modern equines lived ~5.6 mya, mitochondrial evidence supports the division of Equus species into non-caballoid and caballoids or true horses. Of the extant equine species, the lineage of the asses may have diverged first, zebras appear to be monophyletic and differentiated in Africa where they are endemic. Molecular dating indicates the caballoid lineage diverged from the non-caballoids 4 mya, genetic results suggest that all North American fossils of caballine equines, as well as South American fossils traditionally placed in the subgenus E. belong to E. ferus. Remains attributed to a variety of species and lumped together as New World stilt-legged horses probably all belong to a species that was endemic to North America
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Deer
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Deer are the ruminant mammals forming the family Cervidae. The two main groups are the Cervinae, including the muntjac, the deer and the chital, and the Capreolinae, including the elk, reindeer, the Western roe deer. Female reindeer, and male deer of all species, grow, in this they differ from permanently horned antelope, which are in the same order, Artiodactyla. The musk deer of Asia and water chevrotain of tropical African and Asian forests are not usually regarded as true deer and form their own families, Moschidae and Tragulidae, respectively. Deer appear in art from Palaeolithic cave paintings onwards, and they have played a role in mythology, religion and their economic importance includes the use of their meat as venison, their skins as soft, strong buckskin, and their antlers as handles for knives. Deer hunting has been a sport since at least the Middle Ages. Deer live in a variety of biomes, ranging from tundra to the tropical rainforest, while often associated with forests, many deer are ecotone species that live in transitional areas between forests and thickets and prairie and savanna. The majority of deer species inhabit temperate mixed deciduous forest, mountain mixed coniferous forest, tropical seasonal/dry forest. Clearing open areas within forests to some extent may actually benefit deer populations by exposing the understory and allowing the types of grasses, weeds, additionally, access to adjacent croplands may also benefit deer. However, adequate forest or brush cover must still be provided for populations to grow, however, fallow deer have been introduced to South Africa. There are also species of deer that are highly specialized, and live almost exclusively in mountains, grasslands, swamps. Some deer have a distribution in both North America and Eurasia. Examples include the caribou that live in Arctic tundra and taiga and moose that inhabit taiga, huemul deer of South Americas Andes fill the ecological niches of the ibex and wild goat, with the fawns behaving more like goat kids. Mountain slope habitats vary from moist coniferous/mixed forested habitats to dry forests with alpine meadows higher up. The foothills and river valleys between the mountain provide a mosaic of cropland and deciduous parklands. The rare woodland caribou have the most restricted range living at altitudes in the subalpine meadows. Elk and mule deer both migrate between the alpine meadows and lower coniferous forests and tend to be most common in this region, elk also inhabit river valley bottomlands, which they share with White-tailed deer. They also live in the aspen parklands north of Calgary and Edmonton, the adjacent Great Plains grassland habitats are left to herds of elk, American bison, and pronghorn antelope
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Aurochs
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The aurochs, also urus, ure, is an extinct type of large wild cattle that inhabited Europe, Asia, and North Africa. It is the ancestor of domestic cattle, the species survived in Europe until the last recorded aurochs died in the Jaktorów Forest, Poland in 1627. Other species of wild bovines were also domesticated, namely the water buffalo, gaur. In modern cattle, numerous breeds share characteristics of the aurochs, such as a colour in the bulls with a light eel stripe along the back. The aurochs was variously classified as Bos primigenius, Bos taurus, or, in old sources, the words aurochs, urus, and wisent have all been used synonymously in English. However, the extinct aurochs/urus is a separate species from the still-extant wisent. The two were confused, and some 16th-century illustrations of aurochs and wisents have hybrid features. The word urus is a Latin word, but was borrowed into Latin from Germanic, in German, OHG ūr was compounded with ohso ox, giving ūrohso, which became early modern Aurochs. The word aurochs was borrowed from early modern German, replacing archaic urochs, the word is invariable in number in English, though sometimes back-formed singular auroch and innovated plural aurochses occur. The use in English of the plural form aurochsen is nonstandard and it is directly parallel to the German plural Ochsen and recreates by analogy the same distinction as English ox and oxen. During the Pliocene, the colder climate caused an extension of open grassland, Bos acutifrons is an extinct species of cattle that has been suggested as an ancestor for the aurochs. The oldest aurochs remains have been dated to about 2 million years ago, the Indian subspecies was the first to appear. During the Pleistocene, the species migrated west into the Middle East and they reached Europe about 270,000 years ago. The South Asian domestic cattle, or zebu, descended from Indian aurochs at the edge of the Thar Desert, domestic yak, gayal, and banteng do not descend from aurochs. The first complete mitochondrial genome DNA sequence analysis of Bos primigenius from an archaeologically verified, three wild subspecies of aurochs are recognized. Only the Eurasian subspecies survived until recent times, the Eurasian aurochs once ranged across the steppes and taigas of Europe, Siberia and Central Asia, and East Asia. It is noted as part of the Pleistocene megafauna, and declined in numbers along with other species by the end of Pleistocene. The Eurasian aurochs were domesticated into modern taurine cattle breeds around the sixth millennium BC in the Middle East, Aurochs were still widespread in Europe during the time of the Roman Empire, when they were widely popular as a battle beast in Roman arenas
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Dun gene
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The dun gene is a dilution gene that affects both red and black pigments in the coat color of a horse. The classic dun is a gray-gold or tan, characterized by a color ranging from sandy yellow to reddish brown. A dun horse always has a stripe down the middle of its back, a tail and mane darker than the body coat. Other duns may appear a light shade, or a steel gray. Manes, tails, primitive markings, and other areas are usually the shade of the undiluted base coat color. The dun allele is a dominant, so the phenotype of a horse with either one copy or two copies of the gene is dun. The dun gene also is characterized by primitive markings, which are darker than the body color. A countershading gene can also produce faint dorsal striping, even in such as the Arabian horse or the Thoroughbred. A primary characteristic of the dun gene is the dorsal stripe, the shoulder stripes are less common and often fainter, but usually visible on horses with a short summer coat. The dun coat color is thought to be a trait in the horse. This is because equines appearing in prehistoric cave paintings are dun and these species include both subspecies of Equus ferus, the extinct Equus lambei, and the extant onager and kiang. The dun gene has a stronger effect on the body than the mane, tail, legs. This explains why points on a dun are a shade darker than the coat, or in the case of a dun, the mane, tail. Dun, also called bay dun, classic dun or zebra dun, the most common type of dun, has a tan or gold body with black mane, tail, genetically, the horse has an underlying bay coat color, acted upon by the dun gene. Red dun, also called claybank or fox dun, horses do not have black points, instead, the points and primitive markings are a darker shade of red than the coat. Genetically, the horse has a chestnut coat color, acted upon by the dun gene. Grullo or grulla, also called blue dun or mouse dun, is a smoky, bluish, to mouse-brown color and they consistently have black points and they often have a dark or black head, which is an identifying characteristic of this color. The primitive markings usually are all black, genetically, the horse has an underlying black coat color, acted upon by the dun gene
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Apse
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In architecture, an apse is a semicircular recess covered with a hemispherical vault or semi-dome, also known as an Exedra. Smaller apses may also be in other locations, especially shrines, an apse is a semicircular recess covered with a hemispherical vault. Commonly, the apse of a church, cathedral or basilica is the semicircular or polygonal termination to the choir or sanctuary, in relation to church architecture it is generally the name given to where the altar is placed or where the clergy are seated. An apse is occasionally found in a synagogue, e. g. Maoz Haim Synagogue, the apse is separated from the main part of the church by the transept. Smaller apses are sometimes built in other than the east end. The domed apse became a part of the church plan in the early Christian era. In the Eastern Orthodox tradition, the apse is known as diaconicon. Various ecclesiastical features of which the apse may form part are drawn here, The chancel, directly to the east beyond the choir contains the High Altar. This area is reserved for the clergy, and was formerly called the presbytery. Hemi-cyclic choirs, first developed in the East, came to use in France in 470, famous northern French examples of chevets are in the Gothic cathedrals of Amiens, Beauvais and Reims. The word ambulatory refers to an aisle in the apse that passes behind the altar and choir. An ambulatory may refer to the passages that enclose a cloister in a monastery, or to other types of aisles round the edge of a church building
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David Lewis-Williams
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James David Lewis-Williams is a South African archaeologist. He is best known for his research on southern African San rock art and he is the founder and previous director of the Rock Art Research Institute and is currently professor emeritus of cognitive archaeology at the University of the Witwatersrand. Lewis-Williams is recognised by the National Research Foundation of South Africa as a leading international researcher, Lewis-Williams was exposed to social anthropology as an undergraduate at UCT. During this time he received lectures from renowned social anthropologist A. R. Radcliffe-Brown and Monica Wilson, thus, from the start of his career and in contrast to most scholars of the period, Lewis-Williams was looking at San rock art from a social anthropological perspective. Overall he recorded some 4000 images for his thesis research. His PhD, finished in 1977 and later published in 1981 as Believing and Seeing, is regarded as a seminal text in rock art research globally. The quantitative method now bears little impact on the understanding of meaning behind images in San rock art, there is simply too much ambiguity in what the numerical values can be said to imply. In the early 1980s Lewis-Williams began to other theoretical approaches. This was because he At that time in South Africa, during apartheid, Marxism was the language of liberation, in The economic and social context of southern San rock art, Lewis-Williams explored the economic position of the shaman in San society. Using Maurice Godeliers ideas of work, Lewis-Williams investigated the ritual role of shamans in terms of San social structure. Concerns for the members of San society are seen in his research that draws on A foundation to Lewis-Williamss work has been the use of ethnography. As an undergraduate he was exposed to Isaac Schaperas The Khoisan Peoples of South Africa From the start of his career he drew on ethnography to address the meaning of San rock art. Although he never met her, Bleek’s daughter, Dorothea Bleek, Shamanism, which derives from the Siberian Tungus word shaman, was used by Lewis-Williams to explain the metaphor of death common to both ethnography and San rock art. The shamanic world often has tiered realms inhabited by spirits that can be accessed through altered states of consciousness, the world inhabited by people is supplemented by other realms that are usually conceptualised as existing above or below the inhabited world. Shamans have the ability to mediate between these other worlds, as San shamans dance, their supernatural power, or ‘potency’, builds up until it reaches a breaking point and flies out of the body. At this point, they ‘die’, a metaphor for travelling to another realm where spirits dwell in the way as the soul travels after leaving after physical death. The trance dance has been demonstrated to correlate with symbolism in the rock art, features depicted in images relate that relate to altered states of consciousness, such as nasal bleeding and the ‘arms back’ posture, are two illustrative examples known to occur during the dance. Indeed, Lewis-Williams writes that The idea of a belief system was expanded upon using neuropsychology
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Jean Clottes
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Jean Clottes is a prominent French prehistorian. He was born in the French Pyrenees in 1933 and began to study archaeology in 1959 and he initially focused on Neolithic dolmens, which were the topic of his 1975 Ph. D. thesis at the University of Toulouse. After being appointed director of antiquities for the Midi-Pyrénées in 1971. In the following years he led a series of excavations of sites in the region. In 1992, he was named General Inspector for Archaeology at the French Ministry of Culture and he formally retired in 1999, but remains an active contributor to the field. To date he has written over 300 scientific papers, and has edited, co-edited, written and he has also lectured around the world, taught at the University of Toulouse and the University of California at Berkeley, and engaged in numerous public outreach and professional service activities. He has received honors from the French government and also from the Blue Tuareg people of the Sahara Desert. Radiocarbon dating showed that the paintings of Chauvet are approximately 30, 000-32,000 years old, in 1994 he joined with South African anthropologist David Lewis-Williams to study prehistoric art in light of known neuropsychological phenomena associated with shamanic trances. Together they concluded there is a strong argument for believing that much of prehistoric art was in fact produced in the context of shamanic practices. In 1996 they published their findings in the book Les Chamanes de la Préhistoire, the book received heavy criticism from some other researchers. However, other experts have found the ideas compelling, and suggested that academic infighting or jealousy may have played a role in the criticism, in response to their critics, Clottes and Lewis-Williams published an expanded version of their book in 2001. David Lewis-Williams later went on to develop aspects of their thesis more fully in his own book The Mind in the Cave and its sequel, Inside the Neolithic Mind
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San people
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The ancestors of the hunter-gatherer San people are considered to have been the first inhabitants of what is now Botswana and South Africa. The historical presence of the San in Botswana is particularly evident in northern Botswanas Tsodilo Hills region, in this area, stone tools and rock art paintings date back thousands of years. The San were traditionally semi-nomadic, moving seasonally within certain defined areas based on the availability of such as water, game animals. As of 2010, the San population in Botswana numbers about 50,000 to 60,000, from the 1950s through the 1990s, the San switched to farming because of government-mandated modernisation programs. Despite the lifestyle changes, they have provided a wealth of information in anthropology, the San are one of 14 known extant ancestral population clusters. That is, groups of populations with common ancestry, who share ethnicity. The United States Department of State described ongoing discrimination against San, or Basarwa, various terms—including San, Bushmen and Basarwa—have been used to refer to them collectively. Each of these terms has a history, as they have been used by others to refer to them. In the 1970s, many Western anthropologists adopted the term San to refer to the people collectively, historically San was a derogatory term meaning foragers, applied to them by pastoralist Khoikhoi rivals. The term became associated with people without cattle or people who stole cattle, the term Bushmen is still widely used by others and to self-identify, however, opinions vary on whether it is appropriate as it is sometimes viewed as pejorative. The consensus of delegates representing the people at various meetings held in the 1990s was in favour of using the term San to refer to them collectively, according to anthropologist Richard Borshay Lee, the term San was in general use by the people themselves by the late 1990s. There are regional variations in nomenclature, The term most commonly used for them in Botswana is Basarwa. Being a Tswana word meaning those who do not rear cattle, the term is in a noun class representing people who are accepted, while an older variant Masarwa is considered offensive now. In 1996 the different San language groups of Namibia met and agreed to allow the term San to be used externally to refer to them collectively, there are no official terms for them in Angola, Zambia or in Zimbabwe. In Angola they are referred to as mucancalas, or bosquímanos. The terms Amasili and Batwa are sometimes used for them in Zimbabwe, the term San has become favoured in South Africa, and is used in the blazon of the national coat-of-arms. The South African San Council representing San communities in South Africa was established as part of WIMSA in 2001, the people are also referred to as Twa by Xhosa people and Baroa by Sotho people. Bushman is considered derogatory by many South Africans, regardless of their race, a 2008 Equality Court ruling nevertheless found that the use of the Afrikaans equivalent boesman by Die Burger newspaper did not amount to hate speech in the context used
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Trance
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Trance denotes any state of awareness or consciousness other than normal waking consciousness. Trance states may occur involuntarily and unbidden, the term trance may be associated with hypnosis, meditation, magic, flow, and prayer. It may also be related to the generic term, altered states of consciousness. With this definition, meditation, hypnosis, addictions and charisma are seen as being trance states, john Horgan in Rational Mysticism explores the neurological mechanisms and psychological implications of trances and other mystical manifestations. Horgan incorporates literature and case-studies from a number of disciplines in this work, chemistry, physics, a state of hyper or enhanced suggestibility. Trance conditions include all the different states of mind, emotions, moods, all activities which engage a human involve the filtering of information coming into sense modalities, and this influences brain functioning and consciousness. Therefore, trance may be understood as a way for the mind to change the way it filters information in order to more efficient use of the minds resources. Trance states may also be accessed or induced by various modalities and is a way of accessing the unconscious mind for the purposes of relaxation, healing, there is an extensive documented history of trance as evidenced by the case-studies of anthropologists and ethnologists and associated and derivative disciplines. Hence trance may be perceived as endemic to the human condition, principles of trance are being explored and documented as are methods of trance induction. Benefits of trance states are being explored by medical and scientific inquiry, many traditions and rituals employ trance. Trance also has a function in religion and mystical experience, castillo states that, Trance phenomena result from the behavior of intense focusing of attention, which is the key psychological mechanism of trance induction. Adaptive responses, including institutionalized forms of trance, are tuned into neural networks in the brain, culture-specific organizations exist in the structure of individual neurons and in the organizational formation of neural networks. Hoffman states that, Trance is still defined as a state of reduced consciousness. However, the more recent anthropological definition, linking it to altered states of consciousness, is becoming increasingly accepted, Hoffman asserts that. the trance state should be discussed in the plural, because there is more than one altered state of consciousness significantly different from everyday consciousness. According to Hoffman, pilgrims visited the Temple of Epidaurus, an asclepeion, seekers of healing would make pilgrimage and be received by a priest who would welcome and bless them. This temple housed an ancient religious ritual promoting dreams in the seeker that endeavored to promote healing and this temple was built in honor of Asclepios, the Greek god of medicine. The Greek treatment was referred to as incubation, and focused on prayers to Asclepios for healing, the asclepion at Epidaurus is both extensive and well-preserved, and is traditionally regarded as the birthplace of Asclepius. The Oracle at Delphi was also famous for trances in the ancient Greek world, stories of the saints in the Middle Ages, myths, parables, fairy tales, oral lore and storytelling from different cultures are themselves potentially inducers of trance
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Mold
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A mold or mould is a fungus that grows in the form of multicellular filaments called hyphae. In contrast, fungi that can adopt a single-celled growth habit are called yeasts, molds are a large and taxonomically diverse number of fungal species in which the growth of hyphae results in discoloration and a fuzzy appearance, especially on food. The network of these tubular branching hyphae, called a mycelium, is considered a single organism, the hyphae are generally transparent, so the mycelium appears like very fine, fluffy white threads over the surface. Cross-walls may delimit connected compartments along the hyphae, each containing one or multiple, the dusty texture of many molds is caused by profuse production of asexual spores formed by differentiation at the ends of hyphae. The mode of formation and shape of spores is traditionally used to classify molds. Many of these spores are colored, making the much more obvious to the human eye at this stage in its life-cycle. Molds are considered to be microbes and do not form a taxonomic or phylogenetic grouping. In the past, most molds were classified within the Deuteromycota, molds cause biodegradation of natural materials, which can be unwanted when it becomes food spoilage or damage to property. They also play important roles in biotechnology and food science in the production of foods, beverages, antibiotics, pharmaceuticals. There are thousands of species of molds, which have diverse life-styles including saprotrophs, mesophiles, psychrophiles and thermophiles. They all require moisture for growth and some live in aquatic environments, like all fungi, molds derive energy not through photosynthesis but from the organic matter on which they live, utilising heterotrophy. Typically, molds secrete hydrolytic enzymes, mainly from the hyphal tips and these enzymes degrade complex biopolymers such as starch, cellulose and lignin into simpler substances which can be absorbed by the hyphae. In this way molds play a role in causing decomposition of organic material. Many molds also synthesise mycotoxins and siderophores which, together with lytic enzymes, molds can also grow on stored food for animals and humans, making the food unpalatable or toxic and are thus a major source of food losses and illness. Many strategies for food preservation are to prevent or slow growth as well as growth of other microbes. Molds reproduce by producing large numbers of spores, which may contain a single nucleus or be multinucleate. Mold spores can be asexual or sexual, many species can produce both types, other mold spores have slimy sheaths and are more suited to water dispersal. Mold spores are spherical or ovoid single cells, but can be multicellular
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Calcium oxide
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Calcium oxide, commonly known as quicklime or burnt lime, is a widely used chemical compound. It is a white, caustic, alkaline, crystalline solid at room temperature, the broadly used term lime connotes calcium-containing inorganic materials, in which carbonates, oxides and hydroxides of calcium, silicon, magnesium, aluminium, and iron predominate. By contrast, quicklime specifically applies to the chemical compound calcium oxide. Calcium oxide that survives processing without reacting in building such as cement is called free lime. Both it and a chemical derivative are important commodity chemicals, Calcium oxide is usually made by the thermal decomposition of materials, such as limestone or seashells, that contain calcium carbonate in a lime kiln. This is accomplished by heating the material to above 825 °C, annual worldwide production of quicklime is around 283 million tonnes. China is by far the worlds largest producer, with a total of around 170 million tonnes per year, the United States is the next largest, with around 20 million tonnes per year. Approximately 1.8 t of limestone is required per 1.0 t of quicklime, quicklime has a high affinity for water and is a more efficient desiccant than silica gel. The reaction of quicklime with water is associated with an increase in volume by a factor of at least 2.5, the major use of quicklime is in the Basic oxygen steelmaking process. Its usage varies from about 30–50 kg/t of steel, the quicklime neutralizes the acidic oxides, SiO2, Al2O3, and Fe2O3, to produce a basic molten slag. Ground quicklime is used in the production of aerated concrete blocks, quicklime and hydrated lime can considerably increase the load carrying capacity of clay-containing soils. They do this by reacting with finely divided silica and alumina to produce calcium silicates and aluminates, small quantities of quicklime are used in other processes, e. g. the production of glass, calcium aluminate cement, and organic chemicals. The hydrate can be reconverted to quicklime by removing the water by heating it to redness to reverse the hydration reaction, one litre of water combines with approximately 3.1 kilograms of quicklime to give calcium hydroxide plus 3.54 MJ of energy. This process can be used to provide a convenient portable source of heat, light, When quicklime is heated to 2,400 °C, it emits an intense glow. This form of illumination is known as a limelight, and was used broadly in theatrical productions prior to the invention of electric lighting, cement, Calcium oxide is a key ingredient for the process of making cement. As a cheap and widely available alkali, about 50% of the total quicklime production is converted to calcium hydroxide before use. Both quick- and hydrated lime are used in the treatment of drinking water, petroleum industry, Water detection pastes contain a mix of calcium oxide and phenolphthalein. Should this paste come into contact with water in a storage tank
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Art of the Upper Paleolithic
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The art of the Upper Paleolithic is amongst the oldest art known. Older possible examples include the incised ochre from Blombos Cave, Cave art in Europe continued to the Mesolithic about 12,000 years ago. As this corresponds to the phase of the last glacial period. As a notable aspect of what some call the Upper Paleolithic Revolution, and evidence for behavioral modernity, Art helps define what makes us human – it is part of what we are or can be. Decoration was also made on functional tools, such as spear throwers, perforated batons, common subject matters include the animals that were hunted and predators and other animals that were not, the human form was often expressed – especially female shapes. Men are also depicted, such as the Pin Hole man, shells from Mediterranean species have been found at Gönnersdorf, over 1,000 kilometres from the Mediterranean coast. The higher sea levels today mean that the level and nature of settlements in the Upper Paleolithic are unable to be explored. It is possible that they were used in rituals, or alternatively heated on a fire, either type of use may account for the many broken examples, often with the fragments dispersed over some distance. Many sites have large quantities of flat stones apparently used as flooring, Ice Age art can be naturalistic and figurative, it can also be geometric and non-representational. Some of the oldest works of art were found in the Schwäbische Alb, Baden-Württemberg, the Venus figurine known as the Venus of Hohle Fels, dates to some 40,000 years ago. Other fine examples of art from the Upper Palaeolithic includes, cave painting, incised / engraved cave art such as at Creswell Crags, portable art, and open-air art. There are numerous carved or engraved pieces of bone and ivory and these include spear throwers, including one shaped like a mammoth, and many of the type of objects called a bâton de commandement. One of the most famous pieces of art from Britain is the Robin Hood Cave Horse from Derbyshire. Other examples include the Kendricks Cave Decorated Horse Jaw, many of the finest examples were featured in the Ice Age Art, Arrival of the Modern Mind exhibition at the British Museum in 7 February –26 May 2013. A cave at Turobong in South Korea containing human remains has found to contain carved deer bones. Petroglyphs of deer or reindeer found at Sokchang-ri may also date to the Upper Paleolithic, potsherds in a style reminiscent of early Japanese work have been found at Kosan-ri on Jeju island, which, due to lower sea levels at the time, would have been accessible from Japan. The oldest African petroglyphs are dated to approximately the Mesolithic and late Upper Paleolithic boundary, zimbabwes oldest art finds date to at least 10,000 years. The earliest undisputed African rock art dates back about 10,000 years, apparently originating in the Nile River valley and spread as far west as Mali
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Cave of Altamira
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The earliest paintings in the cave were executed around 35,600 years ago. Altamira was the first European cave for which prehistoric origin of the paintings was suggested and promoted by Marcelino Sanz de Sautuola and he published his research with the support of Juan Vilanova y Piera in 1880 to public acclaim. Altamira is located in the Franco-Cantabrian region and declared a World Heritage Site by UNESCO as the element of the Cave of Altamira. The cave is approximately 1000 meters long and consists of a series of twisting passages, the main passage varies from two to six meters in height. The cave was formed through collapses following early Karst phenomena in the rock of Mount Vispieres. Archaeological excavations in the cave floor found rich deposits of artifacts from the Upper Solutrean, both periods belong to the Paleolithic or Old Stone Age. In the millennia between these two occupations, the cave was inhabited only by wild animals. Around 13,000 years ago a rockfall sealed the entrance, preserving its contents until its eventual discovery. Human occupation was limited to the mouth, although paintings were created throughout the length of the cave. The artists used charcoal and ochre or haematite to create the images, often diluting these pigments to produce variations in intensity and they also exploited the natural contours of the cave walls to give their subjects a three-dimensional effect. The Polychrome Ceiling is the most impressive feature of the cave, depicting a herd of extinct steppe bison in different poses, dated to the Magdalenian occupation, these paintings include abstract shapes in addition to animal subjects. Solutrean paintings include images of horses and goats, as well as handprints that were created when artists placed their hands on the cave wall, numerous other caves in northern Spain contain Paleolithic art, but none is as complex or well-populated as Altamira. In 1879, amateur archaeologist Marcelino Sanz de Sautuola was led by his eight-year-old daughter María to discover the caves drawings, a fellow countryman maintained that the paintings had been produced by a contemporary artist, on Sautuolas orders. Later Marcelino Sanz de Sautuola found out the artist could have used marrow fat as oil for the lamp, alcohol was not available at the time as far as we know. Still, remains unexplained how the paintings particularly in Altamira cave and that year, Emile Cartailhac emphatically admitted his mistake in the famous article, Mea culpa dun sceptique, published in the journal LAnthropologie. Sautuola, having died 14 years earlier, did not live to enjoy his rehabilitation, further excavation work on the cave was done by Hermilio Alcalde del Río between 1902–04, the German Hugo Obermaier between 1924–25 and finally by Joaquín González Echegaray in 1981. In 2008, researchers using uranium-thorium dating found that the paintings were completed over a period of up to 20,000 years rather than during a brief period. This means that these drawings could have made by Neanderthal authors instead of homo sapiens
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Prehistoric art
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At this point ancient art begins, for the older literate cultures. The end-date for what is covered by the term thus varies greatly between different parts of the world, from the Upper Palaeolithic through the Mesolithic, cave paintings and portable art such as figurines and beads predominated, with decorative figured workings also seen on some utilitarian objects. In the Neolithic evidence of early pottery appeared, as did sculpture, Early rock art also first appeared in the Neolithic. It also saw the development in areas of artisans, a class of people specializing in the production of art. By the Iron Age, civilizations with writing had arisen from Ancient Egypt to Ancient China, some cultures, notably the Maya civilization, independently developed writing during the time they flourished, which was then later lost. These cultures may be classified as prehistoric, especially if their writing systems have not been deciphered, the earliest undisputed art originated with the Aurignacian archaeological culture in the Upper Paleolithic. However, there is evidence that the preference for the aesthetic emerged in the Middle Paleolithic. Some archaeologists have interpreted certain Middle Paleolithic artifacts as early examples of artistic expression, there are other claims of Middle Paleolithic sculpture, dubbed the Venus of Tan-Tan and the Venus of Berekhat Ram. In 2002 in Blombos cave, situated in South Africa, stones were discovered engraved with grid or cross-hatch patterns and this suggested to some researchers that early Homo sapiens were capable of abstraction and production of abstract art or symbolic art. Several archaeologists including Richard Klein are hesitant to accept the Blombos caves as the first example of actual art, the oldest undisputed works of figurative art were found in the Schwäbische Alb, Baden-Württemberg, Germany. The earliest of these, the Venus figurine known as the Venus of Hohle Fels, monumental open-air art in Europe from this period includes the rock-art at Côa Valley and Mazouco in Portugal, Domingo García and Siega Verde in Spain, and Rocher gravé de Fornols in France. A cave at Turobong in South Korea containing human remains has found to contain carved deer bones. Petroglyphs of deer or reindeer found at Sokchang-ri may also date to the Upper Paleolithic, potsherds in a style reminiscent of early Japanese work have been found at Kosan-ri on Jeju island, which, due to lower sea levels at the time, would have been accessible from Japan. The oldest petroglyphs are dated to approximately the Mesolithic and late Upper Paleolithic boundary, the earliest undisputed African rock art dates back about 10,000 years. The first naturalistic paintings of humans found in Africa date back about 8,000 years apparently originating in the Nile River valley, noted sites containing early art include Tassili nAjjer in southern Algeria, Tadrart Acacus in Libya, and the Tibesti Mountains in northern Chad. Rock carvings at the Wonderwerk Cave in South Africa have been dated to this age, contentious dates as far back as 29,000 years have been obtained at a site in Tanzania. A site at the Apollo 11 Cave complex in Namibia has been dated to 27,000 years, göbekli Tepe in Turkey has circles of massive T-shaped stone pillars dating back to the 10th–8th millennium BCE, the worlds oldest known megaliths. Many of the pillars are decorated with abstract, enigmatic pictograms, Asia was the cradle for several significant civilizations, most notably those of China and South Asia
