1.
Summit
–
A summit is a point on a surface that is higher in elevation than all points immediately adjacent to it. Mathematically, a summit is a maximum in elevation. The topographic terms acme, apex, peak, and zenith are synonymous, the UIAA definition is that a summit is independent if it has a prominence of 30 metres or more, it is a mountain if it has a prominence of at least 300 metres. This can be summarised as follows, A pyramidal peak is an exaggerated form produced by ice erosion of a mountain top, Summit may also refer to the highest point along a line, trail, or route. In many parts of the western United States, the term refers to the highest point along a road, highway. For example, the highest point along Interstate 80 in California is referred to as Donner Summit while the highest point on Interstate 5 is Siskiyou Mountain Summit, geoid Hill List of highest mountains Maxima and minima Nadir Summit accordance Peak finder
2.
Aragon
–
Aragon is an autonomous community in Spain, coextensive with the medieval Kingdom of Aragon. Located in northeastern Spain, the Aragonese autonomous community comprises three provinces, Huesca, Zaragoza, and Teruel, the current Statute of Autonomy declares Aragon a nationality of Spain. Aragons northern province of Huesca borders France and is positioned in the middle of the Pyrenees, within Spain, the community is flanked by Catalonia to the east, Valencia and Castile–La Mancha to the south, and Castile and León, La Rioja, and Navarre to the west. Aragon is home to many rivers—most notably, the river Ebro, Spains largest river in volume and it is also home to the Aneto, the highest mountain in the Pyrenees. As of 2015, the population of Aragon was 1,317,847, with more than half of it living in Zaragoza. As of 2015, half of Aragons population,50. 45%, Huesca is the only other city in the region with a population greater than 50,000. The majority of Aragonese citizens,71. 8%, live in the province of Zaragoza,17. 1% in Huesca and 11. 1% in Teruel, the population density of the region is the second lowest in Spain, only 26, 8/km2, after Castilla La Mancha. Only four cities have more than 20,000 inhabitants, Zaragoza 700,000, Huesca 50,000, Teruel 35,000 and Calatayud 20,000. Spanish is the language in most of Aragon, and it is the only official language, understood. The strip-shaped Catalan-speaking area in Aragon is often called La Franja, with such a low population density large areas of Aragon remain wild and relatively untouched. It is a land of natural contrasts, both in climate and geologically, from the green valleys and snow-capped peaks of the Pyrenees to the dry plains. Aragons Pyrenees include splendid and varied mountain landscapes with soaring peaks, deep canyons, dense forests and its rugged peaks include the Aneto, the highest in the range, the misty Monte Perdido, Perdiguero, Cotiella and many others. The park is one of the last sanctuaries of birds of prey in the range. Many beautiful mountain butterflies and flowers can be seen in the summer, the principal valleys in the mountains include those of Hecho, Canfranc, Tena, Benasque and others. The green valleys hide pretty villages with nice Romanesque churches and typical Pyrenean houses with flowers on the balconies, the oldest Romanesque cathedral in Spain is located in the medieval town of Jaca in the very northern part of Huesca Province. In the Pyrenean foothills, or pre-Pyrenees, the Mallos de Riglos are a natural rock formation. Ancient castles nestle on lonely hills, the most famous being the magnificent Loarre Castle, further south, the Ebro valley, irrigated by the river Ebro, is a rich and fertile agricultural area covered with vast fields of wheat, barley and other fruit and vegetable crops. Many beautiful and little-known settlements, castles and Roman ruins dot the landscape here, some of the most notable towns here include Calatayud, Daroca, Sos del Rey Catolico, Caspe and others
3.
Province of Guadalajara
–
Guadalajara is a province of central/north-central Spain, in the northern part of the autonomous community of Castile–La Mancha. As of 2013 it had a population of 257,723 people, the population of the province has grown in the last 10 years. The province has been inhabited since the Paleolithic as evidenced by stone tools found on the banks of the Henares and Linares rivers. There are remains of bronze age settlements along the river banks in the area. In addition to raising livestock and breeding horses, they created many fortified towns, between 143 and 133 B. C. the Romans initiated their battles to conquer Spain which continued until 94 B. C. They brought agriculture, mining and commerce to the region, facilitating communications with roads, the most important Roman city was Segontia although they built a town wall around Luzaga where there were large public buildings. The Visigoths, with their capital at Toledo, were dominant in the area around the 6th and 7th centuries A. D. bringing Christianity, in 578, King Leovigild founded Recópolis on the River Tagus with a basilica and a palace. The Moors arrived in the area in c,711, establishing Islamic rule for some four centuries until the early 13th century. Their most important contribution was founding of the capital, Guadalajara, the territory now covered by the Province of Guadalajara was part of the Moors Marca Media. Generally sparsely populated, the most important towns were Atienza, Guadalajara, Jadraque, Hita, following the dismemberment of the Caliphate of Córdoba, Toledo gained independence in 1018, reaching its zenith under Yahya-al-Mamun who reigned from 1043 to 1075. Following his death, pressure from King Alfonso VI of León, by the early 12th century, Molina, La Serrania, Sigüenza and the Tagus Valley were retrieved leading to the establishment of the Bishopric of Sigüenza. Under Alfonso VII and Alfonso VIII, the region was repopulated with people other parts of Castile. The modern age began with the Catholic Monarchs, Isabella I of Castile and Ferdinand II of Aragon whose marriage in Valladolid in 1469 united the crowns of Castile and Aragón. They centralized the authority which had developed in the church, the military, in the 16th century, this practice was reinforced by Charles I and Philip II. In Guadalajara, this was particularly the case with areas that had belonged to the orders of Calatrava. The Mendozas who succeeded in acquiring substantial territories built a palace in Pastrana and extended their influence over Sayatón. Under the Mendozas, the city of Guadalajara prospered in the 15th and 16th centuries, attracting writers, historians and philosophers, bringing it the name la Atenas alcarreña. Encouraged by the Renaissance, Íñigo López de Mendoza, 1st Marquis of Santillana, not only built palaces, churches and monasteries but developed a library of Greek
4.
Castilla-La Mancha
–
Castilla-La Mancha is a south-western European region that was part of the Kingdom of Castile. Nowadays it is established as a community of Spain. Castilla-La Mancha is bordered by Castile and León, Madrid, Aragon, Valencia, Murcia, Andalusia and it is one of the most sparsely populated of Spains autonomous communities. Albacete is the largest and most populous city and its capital city is Toledo, and its judicial capital city is Albacete. It is mostly in this region where the story of the famous Spanish novel Don Quixote by Miguel de Cervantes is situated, due to which La Mancha is internationally well-known. Although La Mancha is a windswept, battered plateau, it remains a symbol of Spanish culture with its vineyards, sunflowers, mushrooms, olive plantations, windmills, Manchego cheese, the history of Castilla-La Mancha has been significant. Its origin lay in the Muslim period between the 8th and 14th century, Castilla-La Mancha was the region of many historical battles between Christian crusaders and Muslim forces during the period from 1000 to the 13th century. It was also the region where the Crown of Castile and Aragon were unified in 1492 under Queen Isabel, Castilla-La Mancha is the successor to New Castile, which in turn traces back to the Muslim Taifa of Toledo, one of the taifas of Al Andalus. Alfonso VI conquered the region from the Muslims, taking Toledo in 1085, the Reconquista took Cuenca in 1177. That victory assured Castilian domination of the region and hastened the decline of the Almohad Dynasty, from the time of the Reconquista, Castilla-La Mancha formed part of the Kingdom of Castile. Four centuries later, in 1605, Cervantes Don Quixote gave the world a picture of La Mancha. In 1785, the organization by the reformer Floridablanca divided the region into the provinces of Cuenca, Guadalajara, Madrid, La Mancha. Albacete, Chinchilla, Almansa, Hellín and Yeste, however, Albacete, in turn, also incorporated parts of the territories of the old provinces of Cuenca and Murcia. Albacete was administered as part of the Region of Murcia until the 1978 configuration of autonomous regions, the Autonomous Community of Castilla-La Mancha dates from November 15,1978, as one of the many autonomous regions defined by the Spanish central government. The new, hyphenated name constituted an effort to two distinct regionalisms, that of the larger Castilla and that of the smaller onetime province of La Mancha. The Statute of Autonomy of Castilla–La Mancha was approved August 10,1982, Castilla-La Mancha is divided into 5 provinces named after their capital cities. 496 of these have less than 500 inhabitants,231 have between 501 and 2,000 inhabitants,157 between 2,000 and 10,000 inhabitants, and only 35 have more than 10,000 inhabitants. The municipalities in the north are small and numerous, while in the south they are larger and fewer and this reflects different histories of how these sub-regions were repopulated during the Reconquista
5.
Mountain range
–
A mountain range is a geographic area containing numerous geologically related mountains. A mountain system or system of ranges, sometimes is used to combine several geological features that are geographically related. Mountain ranges are usually segmented by highlands or mountain passes and valleys, individual mountains within the same mountain range do not necessarily have the same geologic structure or petrology. They may be a mix of different orogenic expressions and terranes, for example thrust sheets, uplifted blocks, fold mountains, most geologically young mountain ranges on the Earths land surface are associated with either the Pacific Ring of Fire or the Alpide Belt. The Andes is 7,000 kilometres long and is considered the worlds longest mountain system. The Alpide belt includes Indonesia and southeast Asia, through the Himalaya, the belt also includes other European and Asian mountain ranges. The Himalayas contain the highest mountains in the world, including Mount Everest, mountain ranges outside of these two systems include the Arctic Cordillera, the Urals, the Appalachians, the Scandinavian Mountains, the Altai Mountains and the Hijaz Mountains. If the definition of a range is stretched to include underwater mountains. The mountain systems of the earth are characterized by a tree structure, the sub-range relationship is often expressed as a parent-child relationship. For example, the White Mountains of New Hampshire and the Blue Ridge Mountains are sub-ranges of the Appalachian Mountains, equivalently, the Appalachians are the parent of the White Mountains and Blue Ridge Mountains, and the White Mountains and the Blue Ridge Mountains are children of the Appalachians. The position of mountains influences climate, such as rain or snow, when air masses move up and over mountains, the air cools producing orographic precipitation. As the air descends on the side, it warms again and is drier. Often, a shadow will affect the leeward side of a range. Mountain ranges are constantly subjected to forces which work to tear them down. Erosion is at work while the mountains are being uplifted and long after until the mountains are reduced to low hills, rivers are traditionally believed to be the principle erosive factor on mountain ranges, with their ability of bedrock incision and sediment transport. The rugged topography of a range is the product of erosion. The basins adjacent to a mountain range are filled with sediments which are buried and turned into sedimentary rock. The early Cenozoic uplift of the Rocky Mountains of Colorado provides an example and this mass of rock was removed as the range was actively undergoing uplift
6.
Ordovician
–
The Ordovician is a geologic period and system, the second of six periods of the Paleozoic Era. The Ordovician spans 41.2 million years from the end of the Cambrian Period 485.4 million years ago to the start of the Silurian Period 443.8 Mya. Lapworth recognized that the fauna in the disputed strata were different from those of either the Cambrian or the Silurian periods. It received international sanction in 1960, when it was adopted as a period of the Paleozoic Era by the International Geological Congress. Life continued to flourish during the Ordovician as it did in the earlier Cambrian period, invertebrates, namely molluscs and arthropods, dominated the oceans. The Great Ordovician Biodiversification Event considerably increased the diversity of life, fish, the worlds first true vertebrates, continued to evolve, and those with jaws may have first appeared late in the period. Life had yet to diversify on land, about 100 times as many meteorites struck the Earth during the Ordovician compared with today. The Ordovician Period began with a major extinction called the Cambrian–Ordovician extinction event and it lasted for about 42 million years and ended with the Ordovician–Silurian extinction event, about 443.8 Mya which wiped out 60% of marine genera. The dates given are recent radiometric dates and vary slightly from those found in other sources and this second period of the Paleozoic era created abundant fossils that became major petroleum and gas reservoirs. The boundary chosen for the beginning of both the Ordovician Period and the Tremadocian stage is highly significant and it correlates well with the occurrence of widespread graptolite, conodont, and trilobite species. The base of the Tremadocian allows scientists to relate these species not only to each other and this makes it easier to place many more species in time relative to the beginning of the Ordovician Period. A number of terms have been used to subdivide the Ordovician Period. In 2008, the ICS erected an international system of subdivisions. There exist Baltoscandic, British, Siberian, North American, Australian, the Ordovician Period in Britain was traditionally broken into Early, Middle and Late epochs. The corresponding rocks of the Ordovician System are referred to as coming from the Lower, Middle, the Floian corresponds to the lower Arenig, the Arenig continues until the early Darriwilian, subsuming the Dapingian. The Llanvirn occupies the rest of the Darriwilian, and terminates with it at the base of the Late Ordovician. The Sandbian represents the first half of the Caradoc, the Caradoc ends in the mid-Katian, during the Ordovician, the southern continents were collected into Gondwana. Gondwana started the period in equatorial latitudes and, as the period progressed, drifted toward the South Pole, the small continent Avalonia separated from Gondwana and began to move north towards Baltica and Laurentia, opening the Rheic Ocean between Gondwana and Avalonia
7.
Silurian
–
The Silurian is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at 443.8 million years ago, to the beginning of the Devonian Period,419.2 Mya. As with other periods, the rock beds that define the periods start and end are well identified. The base of the Silurian is set at a major Ordovician-Silurian extinction event when 60% of marine species were wiped out, a significant evolutionary milestone during the Silurian was the diversification of jawed and bony fish. However, terrestrial life would not greatly diversify and affect the landscape until the Devonian, the Silurian system was first identified by British geologist Sir Roderick Impey Murchison, who was examining fossil-bearing sedimentary rock strata in south Wales in the early 1830s. He named the sequences for a Celtic tribe of Wales, the Silures, inspired by his friend Adam Sedgwick and this naming does not indicate any correlation between the occurrence of the Silurian rocks and the land inhabited by the Silures. As it was first identified, the Silurian series when traced farther afield quickly came to overlap Sedgwicks Cambrian sequence, however, charles Lapworth resolved the conflict by defining a new Ordovician system including the contested beds. An early alternative name for the Silurian was Gotlandian after the strata of the Baltic island of Gotland, the French geologist Joachim Barrande, building on Murchisons work, used the term Silurian in a more comprehensive sense than was justified by subsequent knowledge. He divided the Silurian rocks of Bohemia into eight stages and his interpretation was questioned in 1854 by Edward Forbes, and the later stages of Barrande, F, G and H, have since been shown to be Devonian. Despite these modifications in the groupings of the strata, it is recognized that Barrande established Bohemia as a classic ground for the study of the earliest fossils. The epoch is named for the town of Llandovery in Carmarthenshire, the Wenlock, which lasted from 433.4 ±1.5 to 427.4 ±2.8 mya, is subdivided into the Sheinwoodian and Homerian ages. It is named after Wenlock Edge in Shropshire, England, during the Wenlock, the oldest known tracheophytes of the genus Cooksonia, appear. The first terrestrial animals also appear in the Wenlock, represented by air-breathing millipedes from Scotland. The Ludlow, lasting from 427.4 ±1.5 to 423 ±2.8 mya, comprises the Gorstian stage, lasting until 425.6 million years ago, and it is named for the town of Ludlow in Shropshire, England. The Pridoli, lasting from 423 ±1.5 to 419.2 ±2.8 mya, is the final and it is named after one locality at the Homolka a Přídolí nature reserve near the Prague suburb Slivenec in the Czech Republic. Přídolí is the old name of a field area. The high sea levels of the Silurian and the flat land resulted in a number of island chains. The southern continents remained united during this period, the melting of icecaps and glaciers contributed to a rise in sea level, recognizable from the fact that Silurian sediments overlie eroded Ordovician sediments, forming an unconformity. The continents of Avalonia, Baltica, and Laurentia drifted together near the equator and this event is the Caledonian orogeny, a spate of mountain building that stretched from New York State through conjoined Europe and Greenland to Norway
8.
Conglomerate (geology)
–
Conglomerates form by the consolidation and lithification of gravel. The size and composition of the fraction of a conglomerate may or may not vary in composition, sorting. In some conglomerates, the gravel-size class consist almost entirely of what were clay clasts at the time of deposition, conglomerates can be found in sedimentary rock sequences of all ages but probably make up less than 1 percent by weight of all sedimentary rocks. A sedimentary rock composed largely of gravel is first named according to the roundness of the gravel, if the gravel clasts that comprise it is largely well-rounded to subrounded, it is a conglomerate. If the gravel clasts that comprise it are largely angular, it is a breccia, such breccias can be called sedimentary breccias to differentiate them from other types of breccia, e. g. volcanic and fault breccias. Sedimentary rocks that contain a mixture of rounded and angular gravel clasts are sometimes called breccio-conglomerate, conglomerates are rarely composed entirely of gravel-size clasts. Typically, the space between the gravel-size clasts is filled by a mixture composed of varying amounts of silt, sand, paraconglomerates are also often unstratified and can contain more matrix than gravel clasts. If the gravel clasts of a conglomerate are in contact with each other, unlike paraconglomerates, orthoconglomerates are typically cross-bedded and often well-cemented and lithified by either calcite, hematite, quartz, or clay. The differences between paraconglomerates and orthoconglomerates reflect differences in how they are deposited, paraconglomerates are commonly either glacial tills or debris flow deposits. Orthoconglomerates are typically associated with aqueous currents, conglomerates are also classified according to the composition of their clasts. A conglomerate or any clastic sedimentary rock that consists of a rock or mineral is known as either a monomict, monomictic, oligomict. If the conglomerate consists of two or more different types of rocks, minerals, or combination of both, it is known as either a polymict or polymictic conglomerate. If a polymictic conglomerate contains an assortment of the clasts of metastable and unstable rocks and minerals, two recognized types of type of intraformational conglomerates are shale-pebble and flat-pebble conglomerates. Finally, conglomerates are often differentiated and named according to the dominant clast size comprising them, conglomerates are deposited in a variety of sedimentary environments. In turbidites, the part of a bed is typically coarse-grained. In this setting, conglomerates are normally very well sorted, well-rounded, conglomerates are normally present at the base of sequences laid down during marine transgressions above an unconformity, and are known as basal conglomerates. They represent the position of the shoreline at a time and are diachronous. Conglomerates deposited in environments are typically well rounded and well sorted
9.
Clay
–
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
10.
Open-pit mining
–
Open-pit, open-cast or open cut mining is a surface mining technique of extracting rock or minerals from the earth by their removal from an open pit or borrow. This form of mining differs from extractive methods that require tunneling into the earth, for minerals that occur deep below the surface—where the overburden is thick or the mineral occurs as veins in hard rock—underground mining methods are used to extract the valued material. Open-pit mines that produce building materials and dimension stone are commonly referred to as quarries, open-pit mines are typically enlarged until either the mineral resource is exhausted, or an increasing ratio of overburden to ore makes further mining uneconomic. When this occurs, the mines are sometimes converted to landfills for disposal of solid wastes. Open-cast mines are dug on benches, which describe vertical levels of the hole and these benches are usually on four to sixty meter intervals, depending on the size of the machinery that is being used. Many quarries do not use benches, as they are usually shallow, most walls of the pit are generally blast mined on an angle less than vertical, to prevent and minimize damage and danger from rock falls. This depends on how weathered the rocks are, and the type of rock, the inclined section of the wall is known as the batter, and the flat part of the step is known as the bench or berm. The steps in the walls help prevent rock falls continuing down the face of the wall. In some instances additional ground support is required and rock bolts, cable bolts, de-watering bores may be used to relieve water pressure by drilling horizontally into the wall, which is often enough to cause failures in the wall by itself. A haul road is situated at the side of the pit, forming a ramp up which trucks can drive, carrying ore. Waste rock is piled up at the surface, near the edge of the open pit and this is known as the waste dump. The waste dump is also tiered and stepped, to minimize degradation, ore which has been processed is known as tailings, and is generally a slurry. This is pumped to a dam or settling pond, where the water evaporates. This toxicity can harm the surrounding environment, after mining finishes, the mine area may undergo land rehabilitation. Waste dumps are contoured to flatten out, to further stabilise them. This is then covered with soil, and vegetation is planted to help consolidate the material. There are no long term studies on the success of these due to the relatively short time in which large scale open pit mining has existed. It may take hundreds to thousands of years for some waste dumps to become acid neutral, the dumps are usually fenced off to prevent livestock denuding them of vegetation
11.
Atlantic Ocean
–
The Atlantic Ocean is the second largest of the worlds oceans with a total area of about 106,460,000 square kilometres. It covers approximately 20 percent of the Earths surface and about 29 percent of its surface area. It separates the Old World from the New World, the Atlantic Ocean occupies an elongated, S-shaped basin extending longitudinally between Eurasia and Africa to the east, and the Americas to the west. The Equatorial Counter Current subdivides it into the North Atlantic Ocean, in contrast, the term Atlantic originally referred specifically to the Atlas Mountains in Morocco and the sea off the Strait of Gibraltar and the North African coast. The Greek word thalassa has been reused by scientists for the huge Panthalassa ocean that surrounded the supercontinent Pangaea hundreds of years ago. The term Aethiopian Ocean, derived from Ancient Ethiopia, was applied to the Southern Atlantic as late as the mid-19th century, many Irish or British people refer to the United States and Canada as across the pond, and vice versa. The Black Atlantic refers to the role of ocean in shaping black peoples history. Irish migration to the US is meant when the term The Green Atlantic is used, the term Red Atlantic has been used in reference to the Marxian concept of an Atlantic working class, as well as to the Atlantic experience of indigenous Americans. Correspondingly, the extent and number of oceans and seas varies, the Atlantic Ocean is bounded on the west by North and South America. It connects to the Arctic Ocean through the Denmark Strait, Greenland Sea, Norwegian Sea, to the east, the boundaries of the ocean proper are Europe, the Strait of Gibraltar and Africa. In the southeast, the Atlantic merges into the Indian Ocean, the 20° East meridian, running south from Cape Agulhas to Antarctica defines its border. In the 1953 definition it extends south to Antarctica, while in later maps it is bounded at the 60° parallel by the Southern Ocean, the Atlantic has irregular coasts indented by numerous bays, gulfs, and seas. Including these marginal seas the coast line of the Atlantic measures 111,866 km compared to 135,663 km for the Pacific. Including its marginal seas, the Atlantic covers an area of 106,460,000 km2 or 23. 5% of the ocean and has a volume of 310,410,900 km3 or 23. 3%. Excluding its marginal seas, the Atlantic covers 81,760,000 km2 and has a volume of 305,811,900 km3, the North Atlantic covers 41,490,000 km2 and the South Atlantic 40,270,000 km2. The average depth is 3,646 m and the maximum depth, the bathymetry of the Atlantic is dominated by a submarine mountain range called the Mid-Atlantic Ridge. It runs from 87°N or 300 km south of the North Pole to the subantarctic Bouvet Island at 42°S, the MAR divides the Atlantic longitudinally into two halves, in each of which a series of basins are delimited by secondary, transverse ridges. The MAR reaches above 2000 m along most of its length, the MAR is a barrier for bottom water, but at these two transform faults deep water currents can pass from one side to the other
