1.
Geological formation
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A formation or geological formation is the fundamental unit of lithostratigraphy. A formation consists of a number of rock strata that have a comparable lithology. Formations are not defined on the thickness of the strata they consist of. The concept of formally defined layers or strata is central to the discipline of stratigraphy. Formations can be divided into members and are themselves frequently parcelled together in groups, the definition and recognition of formations allow geologists to correlate geologic strata across wide distances between outcrops and exposures of rock strata. Formations were initially described to be the essential geologic time markers based on relative ages, the divisions of the geological time scale were the formations described and put in chronological order by the geologists and stratigraphers of the 18th and 19th centuries. Geologic formations are sedimentary rock layers, but may also be metamorphic rocks. Igneous intrusive rocks are not divided into formations. Formations are the only formal lithostratigraphic units into which the stratigraphic column everywhere should be divided completely on the basis of lithology, Formations must be able to be delineated at the scale of geologic mapping practiced in the region. The thickness of formations may range from less than a meter to several thousand meters, geologic formations are typically named for the geographic area in which they were first described. Strictly, formations cannot be defined on any other criteria except primary lithology, sequence stratigraphy is a concept which challenges the idea of strict lithostratigraphic units by defining units based on events in sedimentary basins such as oceanic regressions and transgressions. The term formation is used informally to refer to a specific grouping of rocks. Formation is also used informally to describe the sometimes odd shapes that rocks acquire through erosional or depositional processes, such a formation is said to be abandoned when it is no longer affected by the geologic agent that produced it. Some well known cave formations include stalactites and stalagmites, geochronology List of Rock Formations List of Chinese geological formations List of fossil sites
2.
Subsoil
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Subsoil is the layer of soil under the topsoil on the surface of the ground. Like topsoil it is composed of a mixture of small particles such as sand, silt and/or clay. Below the subsoil is the substratum, which can be residual bedrock, sediments, as it is lacking in dark humus, subsoil is usually paler in colour than the overlying topsoil. It may contain the deeper roots of plants, such as trees. Clay-based subsoil has been the source of material for adobe, cob, rammed earth, wattle and daub. Subsoil compaction by vehicles with high axle load—extent, persistence and crop response, chemical Factors Affecting Root Growth in Subsoil Horizons of Coastal Plain Soils. Soil Science Society of America Journal
3.
Netherlands
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The Netherlands, also informally known as Holland is the main constituent country of the Kingdom of the Netherlands. It is a densely populated country located in Western Europe with three territories in the Caribbean. The European part of the Netherlands borders Germany to the east, Belgium to the south, and the North Sea to the northwest, sharing borders with Belgium, the United Kingdom. The three largest cities in the Netherlands are Amsterdam, Rotterdam and The Hague, Amsterdam is the countrys capital, while The Hague holds the Dutch seat of parliament and government. The port of Rotterdam is the worlds largest port outside East-Asia, the name Holland is used informally to refer to the whole of the country of the Netherlands. Netherlands literally means lower countries, influenced by its low land and flat geography, most of the areas below sea level are artificial. Since the late 16th century, large areas have been reclaimed from the sea and lakes, with a population density of 412 people per km2 –507 if water is excluded – the Netherlands is classified as a very densely populated country. Only Bangladesh, South Korea, and Taiwan have both a population and higher population density. Nevertheless, the Netherlands is the worlds second-largest exporter of food and agricultural products and this is partly due to the fertility of the soil and the mild climate. In 2001, it became the worlds first country to legalise same-sex marriage, the Netherlands is a founding member of the EU, Eurozone, G-10, NATO, OECD and WTO, as well as being a part of the Schengen Area and the trilateral Benelux Union. The first four are situated in The Hague, as is the EUs criminal intelligence agency Europol and this has led to the city being dubbed the worlds legal capital. The country also ranks second highest in the worlds 2016 Press Freedom Index, the Netherlands has a market-based mixed economy, ranking 17th of 177 countries according to the Index of Economic Freedom. It had the thirteenth-highest per capita income in the world in 2013 according to the International Monetary Fund, in 2013, the United Nations World Happiness Report ranked the Netherlands as the seventh-happiest country in the world, reflecting its high quality of life. The Netherlands also ranks joint second highest in the Inequality-adjusted Human Development Index, the region called Low Countries and the country of the Netherlands have the same toponymy. Place names with Neder, Nieder, Nether and Nedre and Bas or Inferior are in use in all over Europe. They are sometimes used in a relation to a higher ground that consecutively is indicated as Upper, Boven, Oben. In the case of the Low Countries / the Netherlands the geographical location of the region has been more or less downstream. The geographical location of the region, however, changed over time tremendously
4.
Pliocene
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The Pliocene Epoch is the epoch in the geologic timescale that extends from 5.333 million to 2.58 million years BP. It is the second and youngest epoch of the Neogene Period in the Cenozoic Era, the Pliocene follows the Miocene Epoch and is followed by the Pleistocene Epoch.588 to 1.806 million years ago, and is now included in the Pleistocene. As with other geologic periods, the geological strata that define the start and end are well identified but the exact dates of the start. The boundaries defining the Pliocene are not set at an easily identified worldwide event, the upper boundary was set at the start of the Pleistocene glaciations. The Pliocene was named by Sir Charles Lyell, the name comes from the Greek words πλεῖον and καινός and means roughly continuation of the recent, referring to the essentially modern marine mollusc faunas. H. W. Fowler called the term a regrettable barbarism, in the official timescale of the ICS, the Pliocene is subdivided into two stages. From youngest to oldest they are, Piacenzian Zanclean The Piacenzian is sometimes referred to as the Late Pliocene, in the system of North American Land Mammal Ages include Hemphillian, and Blancan. The Blancan extends forward into the Pleistocene, South American Land Mammal Ages include Montehermosan, Chapadmalalan and Uquian. In the Paratethys area the Pliocene contains the Dacian and Romanian stages, as usual in stratigraphy, there are many other regional and local subdivisions in use. In Britain the Pliocene is divided into the stages, Gedgravian, Waltonian, Pre-Ludhamian, Ludhamian, Thurnian, Bramertonian or Antian, Pre-Pastonian or Baventian, Pastonian and Beestonian. The exact correlations between these stages and the ICS stages is still a matter of detail. The formation of an Arctic ice cap is signaled by a shift in oxygen isotope ratios and ice-rafted cobbles in the North Atlantic. Mid-latitude glaciation was probably underway before the end of the epoch, the global cooling that occurred during the Pliocene may have spurred on the disappearance of forests and the spread of grasslands and savannas. Continents continued to drift, moving from positions possibly as far as 250 km from their present locations to positions only 70 km from their current locations, africas collision with Europe formed the Mediterranean Sea, cutting off the remnants of the Tethys Ocean. The border between the Miocene and the Pliocene is also the time of the Messinian salinity crisis, Sea level changes exposed the land-bridge between Alaska and Asia. Pliocene marine rocks are exposed in the Mediterranean, India. Elsewhere, they are exposed largely near shores, the change to a cooler, dry, seasonal climate had considerable impacts on Pliocene vegetation, reducing tropical species worldwide. Deciduous forests proliferated, coniferous forests and tundra covered much of the north, tropical forests were limited to a tight band around the equator, and in addition to dry savannahs, deserts appeared in Asia and Africa
5.
Oosterhout
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Oosterhout is a municipality and a city in the southern Netherlands. The municipality had a population of 53,771 in 2014, the Knights Templar had a temple here dedicated to St. John the Baptist. It was home to a castle which later acquired control over the area, up to Breda. The castle was destroyed by Spanish troops during the Eighty Years War, in 1573, the city became the seat of a flourishing ceramics industry, which lasted until the 19th century. In 1625 the city was besieged by Frederick Henry, Prince of Orange, despite the rise of Protestantism, it was home to several Catholic monasteries, including that of the Premonstratensians, which is still active. Oosterhout received city rights in 1809, by will of Louis Bonaparte, slotjes Unfinished basilica of St. John. A Romanesque church existed in 1277, but from around 1473 it was rebuilt in the current Gothic style, the tower was constructed from 1519 to 1552. It was restored several times in the following centuries, monastery of St. Catherine, once a castle held by the Knights Hospitaller. Slotbossetoren, destroyed castle Oosterhout is home to sports clubs, for example volleyball club VOKO, football clubs SCO-Tofs, VV Oosterhout, baseball club Twins
6.
North Brabant
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Noord Brabant, also unofficially called Brabant, is a province in the south of the Netherlands. It borders the provinces of South Holland and Gelderland to the north, Limburg to the east, Zeeland to the west, the northern border follows the Meuse river westward to its mouth in the Hollands Diep strait, part of the Rhine–Meuse–Scheldt delta. The Duchy of Brabant was a state of the Holy Roman Empire established in 1183 or 1190. Until the 17th century, the area that now makes up the province of North Brabant was mostly part of the Duchy of Brabant, of which the southern part is now in Belgium. In the 14th and 15th century, the experienced a golden age, especially the cities of Brussel, Mechelen, Leuven, Antwerpen, Breda, Bergen op Zoom. After the Union of Utrecht was signed in 1579, Brabant became a battlefield between the Protestant Dutch Republic and Catholic Spain, which occupied the southern Netherlands, attempts to introduce Protestantism into the region were largely unsuccessful, North Brabant remained strongly Roman Catholic. For over a century, North Brabant served mainly as a buffer zone. In 1796, when confederate Dutch Republic became the unitary Batavian Republic and this status ended with the reorganisation by the French, and the area was divided over several departments. This boundary between the Netherlands and Belgium is special in that it does not form a contiguous line, a few of these irregularities were corrected, Huijbergen became totally Dutch, but some remain, notably Baarle-Hertog and Baarle-Nassau. The period from 1900 until the late 1960s is called Het Rijke Roomse Leven, in those days every village in North Brabant had a convent from which the nuns operated. Politically, the province was dominated by Catholic parties, the Roomsch-Katholieke Staatspartij and its successor, the Katholieke Volkspartij. The influence of Het Rijke Roomse Leven remains in the form of education where some schools are still Roman Catholic, a cultural divide is still found between the Catholic south and the Protestant north, but with a total of 1. In the province of North Brabant Catholics are no longer a majority of the population as of 2010, only 1–2% of the total population of Catholic area attend mass, and these churchgoers consist mostly of people over 65 years old. With a population density of 501/km², North-Brabant is above average urbanized, the urbanization is at the center of the province at largest, where the kite is located, the rest of the province has a more rural character. The province has preserved some of its scenic nature well, also, south of Eindhoven named De Kempen is a beautiful area with farmlands and forests. In Heeze, also south of Eindhoven, are the areas the Groote Heide. The Strabrechtse Heide holds also the largest fen of the Netherlands, like most of the Netherlands, North Brabant is mostly flat but nearly every part of North Brabant is above sea level, therefore, there are not as many canals as in the lower parts of The Netherlands. Although most of the lives in urban areas, the province is scattered with villages around which most of the land is cultivated
7.
Sand
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Sand is a naturally occurring granular material composed of finely divided rock and mineral particles. It is defined by size, being finer than gravel and coarser than silt, Sand can also refer to a textural class of soil or soil type, i. e. a soil containing more than 85% sand-sized particles by mass. The second most common type of sand is calcium carbonate, for example aragonite, for example, it is the primary form of sand apparent in areas where reefs have dominated the ecosystem for millions of years like the Caribbean. Sand is a non renewable resource over human timescales, and sand suitable for making concrete is in high demand, in terms of particle size as used by geologists, sand particles range in diameter from 0.0625 mm to 2 mm. An individual particle in this size is termed a sand grain. Sand grains are between gravel and silt, a 1953 engineering standard published by the American Association of State Highway and Transportation Officials set the minimum sand size at 0.074 mm. A1938 specification of the United States Department of Agriculture was 0.05 mm. Sand feels gritty when rubbed between the fingers. ISO14688 grades sands as fine, medium and coarse with ranges 0.063 mm to 0.2 mm to 0.63 mm to 2.0 mm. In the United States, sand is commonly divided into five sub-categories based on size, very fine sand, fine sand, medium sand, coarse sand, and very coarse sand. These sizes are based on the Krumbein phi scale, where size in Φ = -log2D, on this scale, for sand the value of Φ varies from −1 to +4, with the divisions between sub-categories at whole numbers. The composition of sand is highly variable, depending on the local rock sources. The gypsum sand dunes of the White Sands National Monument in New Mexico are famous for their bright, arkose is a sand or sandstone with considerable feldspar content, derived from weathering and erosion of a granitic rock outcrop. Some sands contain magnetite, chlorite, glauconite or gypsum, Sands rich in magnetite are dark to black in color, as are sands derived from volcanic basalts and obsidian. Chlorite-glauconite bearing sands are typically green in color, as are sands derived from basaltic with a high olivine content, many sands, especially those found extensively in Southern Europe, have iron impurities within the quartz crystals of the sand, giving a deep yellow color. Sand deposits in some areas contain garnets and other resistant minerals, the study of individual grains can reveal much historical information as to the origin and kind of transport of the grain. Quartz sand that is weathered from granite or gneiss quartz crystals will be angular. It is called grus in geology or sharp sand in the trade where it is preferred for concrete. Sand that is transported long distances by water or wind will be rounded, people who collect sand as a hobby are known as arenophiles
8.
Glauconite
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Glauconite is an iron potassium phyllosilicate mineral of characteristic green color with very low weathering resistance and very friable. It crystallizes with a monoclinic geometry and its name is derived from the Greek glaucos meaning blue, referring to the common blue-green color of the mineral, its sheen and blue-green color presumably relating to the seas surface. Its color ranges from green, black green to bluish green. In the Mohs scale it has hardness of 2, the relative specific gravity range is 2.4 -2.95. It is normally found in dark green rounded brittle pellets, thus references to greensand marl sometimes refer specifically to glauconite. The Glauconitic Marl formation is named after it, and there is a Glauconitic Sandstone formation in the Mannville Group of Western Canada, normally, glauconite is considered a diagnostic mineral indicative of continental shelf marine depositional environments with slow rates of accumulation. For instance, it appears in Jurassic/lower Cretaceous deposits of greensand and it can also be found in sand or clay formations, or in impure limestones and in chalk. Glauconite forms under reducing conditions in sediments and such deposits are found in nearshore sands, open oceans. Glauconite remains absent in fresh-water lakes, but is noted in shelf sediments of the western Black Sea, the wide distribution of these sandy deposits was first made known by naturalists on board the fifth HMS Challenger, in the expedition of 1872–1876. Glauconite has long used in Europe as a green pigment for artistic oil paint under the name green earth. One example is its use in Russian icon paintings, another use was for underpainting of human flesh in medieval painting. It is also found as mineral pigment in paintings from the ancient Roman Gaul. Glauconite, a component of greensand, is also a common source of potassium in plant fertilizers and is also used to adjust soil pH. It is used for conditioning in both organic and nonorganic farming, whether as an unprocessed material or as a feedstock in the synthesis of commercial fertilizer powders
9.
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
10.
Miocene
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The Miocene is the first geological epoch of the Neogene Period and extends from about 23.03 to 5.333 million years ago. The Miocene was named by Sir Charles Lyell and its name comes from the Greek words μείων and καινός and means less recent because it has 18% fewer modern sea invertebrates than the Pliocene. The Miocene follows the Oligocene Epoch and is followed by the Pliocene Epoch, the earth went from the Oligocene through the Miocene and into the Pliocene, with the climate slowly cooling towards a series of ice ages. The Miocene boundaries are not marked by a single distinct global event, the apes arose and diversified during the Miocene, becoming widespread in the Old World. By the end of this epoch, the ancestors of humans had split away from the ancestors of the chimpanzees to follow their own evolutionary path, as in the Oligocene before it, grasslands continued to expand and forests to dwindle in extent. In the Miocene seas, kelp forests made their first appearance, the plants and animals of the Miocene were fairly modern. The Miocene faunal stages from youngest to oldest are typically named according to the International Commission on Stratigraphy, Two subdivisions each form the lower, middle, continents continued to drift toward their present positions. Mountain building took place in western North America, Europe, both continental and marine Miocene deposits are common worldwide with marine outcrops common near modern shorelines. Well studied continental exposures occur in the North American Great Plains, India continued to collide with Asia, creating dramatic new mountain ranges. The Tethys Seaway continued to shrink and then disappeared as Africa collided with Eurasia in the Turkish–Arabian region between 19 and 12 Ma. The subsequent uplift of mountains in the western Mediterranean region and a fall in sea levels combined to cause a temporary drying up of the Mediterranean Sea near the end of the Miocene. The global trend was towards increasing aridity caused primarily by global cooling reducing the ability of the atmosphere to absorb moisture, climates remained moderately warm, although the slow global cooling that eventually led to the Pleistocene glaciations continued. Although a long-term cooling trend was well underway, there is evidence of a period during the Miocene when the global climate rivalled that of the Oligocene. The Miocene warming began 21 million years ago and continued until 14 million years ago, by 8 million years ago, temperatures dropped sharply once again, and the Antarctic ice sheet was already approaching its present-day size and thickness. Greenland may have begun to have large glaciers as early as 7 to 8 million years ago, life during the Miocene Epoch was mostly supported by the two newly formed biomes, kelp forests and grasslands. This allows for more grazers, such as horses, rhinoceroses, ninety five percent of modern plants existed by the end of this epoch. The higher organic content and water retention of the deeper and richer grassland soils, with long term burial of carbon in sediments, produced a carbon and this, combined with higher surface albedo and lower evapotranspiration of grassland, contributed to a cooler, drier climate. The expansion of grasslands and radiations among terrestrial herbivores correlates to fluctuations in CO2
11.
Breda Formation
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The Breda Formation is a geologic formation in the subsurface of the Netherlands. The formation consists of marine sands and clays that were deposited during the Miocene epoch. Although the formation is not very rich in fossils, sometimes bones of fishes, shells, the Breda Formation was deposited in the shallow sea that covered the Netherlands during the Miocene. It is mostly on top of the Oligocene clays of the Rupel Formation or late Oligocene sands, the Breda Formation can be a couple of meters to more than 700 meters thick. The top is formed by an erosional nonconformity in the south, in the west the contact with the Pliocene Oosterhout Formation is more gradual. In the Roerdal Graben the mostly Pliocene Kiezeloolite Formation is sometimes on top of the Breda Formation. Locally the Breda Formation can be subdivided into members, the Aalten Member, the Eibergen Member, the Zenderen Member, the Breda Formation corresponds largely with the Berchem Formation of northern Belgium. Staalduinen, C. J. van, Zagwijn, W. H. & Zandstra,2003, Formatie van Breda, TNO website
