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Aalter Formation
The Aalter Formation ( nl, Formatie van Aalter, abbreviation: Aa; named after the town of Aalter in East Flanders) is a geologic formation in the subsurface of northwest Belgium. The formation consists of marine clay and sand, deposited in the shallow sea that covered northern and central Belgium in the Eocene epoch. The Aalter Formation crops out in the provinces of East Flanders and West Flanders and forms a maximally 30 meters thick layer in the subsurface. To the east, the formation wedges out and becomes thinner. Due to this wedging out, the formation does not occur anymore in the province of Antwerp. The base of the formation consists of glauconiferous clayey sand alternating with organic rich (humus and peat) layers (the Aalterbrugge Member). On top of this is a sequence of clay, sand and sandstone layers, rich in fossils (the Beernem Member). The top of the formation consists of fossil rich, glauconiferous fine sand (the Oedelem Member). The Aalter Formation was for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ypresian
In the geologic timescale the Ypresian is the oldest age (geology), age or lowest stage (stratigraphy), stratigraphic stage of the Eocene. It spans the time between , is preceded by the Thanetian Age (part of the Paleocene) and is followed by the Eocene Lutetian Age. The Ypresian is consistent with the lower Eocene. Events The Ypresian Age begins during the throes of the Paleocene–Eocene Thermal Maximum (PETM). The Fur Formation in Denmark, the Messel shales in Germany, the Oise amber of France and Cambay amber of India are of this age. The Eocene Okanagan Highlands are an uplands subtropical to temperate series of lakes from the Ypresian. Stratigraphic definition The Ypresian Stage was introduced in scientific literature by Belgium, Belgian geologist André Hubert Dumont in 1850. The Ypresian is named after the Flanders, Flemish city of Ypres in Belgium (spelled ''Ieper'' in Dutch). The definitions of the original stage were totally different from the modern ones. The Ypresi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Humus
In classical soil science, humus is the dark organic matter in soil that is formed by the decomposition of plant and animal matter. It is a kind of soil organic matter. It is rich in nutrients and retains moisture in the soil. Humus is the Latin word for "earth" or "ground". In agriculture, "humus" sometimes also is used to describe mature or natural compost extracted from a woodland or other spontaneous source for use as a soil conditioner. It is also used to describe a topsoil horizon that contains organic matter (''humus type'', ''humus form'', or ''humus profile''). Humus has many nutrients that improve the health of soil, nitrogen being the most important. The ratio of carbon to nitrogen (C:N) of humus commonly ranges between eight and fifteen with the median being about twelve. It also significantly affects the bulk density of soil. Humus is amorphous and lacks the "cellular cake structure characteristic of plants, micro-organisms or animals". Description The primary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Urobatis
''Urobatis'' is a genus of the family Urotrygonidae. These rays live in Costa Rica, Mexico, the Bahamas, El Salvador, Honduras, Guatemala, Nicaragua, Colombia, Venezuela, Panama, Trinidad and Tobago, Barbados, Grenada, Saint Vincent and the Grenadines, Saint Lucia, Martinique, Dominica, Guadeloupe, Montserrat, Antigua and Barbuda, Belize, Puerto Rico, Saint Kitts and Nevis, Anguilla, Dominican Republic, Haiti, Jamaica, Cuba, Cayman Islands, Virgin Islands, Turks and Caicos Islands, French Guiana, Guyana, Suriname, Chile, Peru, Ecuador and the United States. Species There are currently seven recognized species in this genus: * '' Urobatis concentricus'' R. C. Osburn & J. T. Nichols, 1916 (Bullseye round stingray) * '' Urobatis halleri'' J. G. Cooper, 1863 (Round stingray) * '' Urobatis jamaicensis'' G. Cuvier, 1816 (Yellow stingray) * '' Urobatis maculatus'' Garman Garman is a surname or first name. Notable people with the name include: Sports * Ann Garman, All-American Girls ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chondrichthyes
Chondrichthyes (; ) is a class that contains the cartilaginous fishes that have skeletons primarily composed of cartilage. They can be contrasted with the Osteichthyes or ''bony fishes'', which have skeletons primarily composed of bone tissue. Chondrichthyes are jawed vertebrates with paired fins, paired nares, scales, and a heart with its chambers in series. Extant chondrichthyes range in size from the 10 cm (3.9 in) finless sleeper ray to the 10 m (32 ft) whale shark. The class is divided into two subclasses: Elasmobranchii (sharks, rays, skates, and sawfish) and Holocephali ( chimaeras, sometimes called ghost sharks, which are sometimes separated into their own class). Within the infraphylum Gnathostomata, cartilaginous fishes are distinct from all other jawed vertebrates. Anatomy Skeleton The skeleton is cartilaginous. The notochord is gradually replaced by a vertebral column during development, except in Holocephali, where the notochord stays intact. In some deepwat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gentbrugge Formation
The Gentbrugge Formation ( nl, Formatie van Gentbrugge, abbreviation: Ge; named after the town of Gentbrugge in East Flanders) is a geologic formation in the west of Belgium. The formation crops out in East Flanders and West Flanders and also occurs in the subsurface of the Province of Antwerp. It consists of marine clay, silt and sand, deposited in the shallow sea that covered northern Belgium during the Ypresian age (around 50 million years ago, part of the early Eocene).Steurbaut, 2006, p.76 Description The Gentbrugge Formation reaches its greatest thickness in the north of Belgium, where it can be maximally thick. It is subdivided into three members. The base of the formation is formed by silty clay and clayey silt (Merelbeke Member). On top of this are laminae of silt (Pittem Member) and beds of very fine sand, disturbed by bioturbation (Vlierzele Member). The sands can have horizontal bedding as well as cross bedding, and are often lithified into sandstone ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lede Formation
The Lede Formation ( nl, Formatie van Lede; abbreviation: Ld) is a geologic formation in the subsurface of Belgium. The formation is named after the town of Lede in East Flanders. It consists of shallow-marine limestone and sandstone, deposited in the former sea that covered Belgium during the Eocene. The Lede Formation crops out in East Flanders, Flemish Brabant, Antwerp and parts of Hainaut, Walloon Brabant and West Flanders. It forms a laterally continuous unit of calcareous and glauconiferous sandstone, sandy limestone and calcareous sandstone, which reaches a thickness of up to 15 metres. The formation is characterised by fossils of the nummulite '' Nummulites variolarius''. It is not subdivided into members. The age of the Lede Formation is middle Lutetian (about 44 million years old) and it is part of the Zenne Group. On top of the Lede Formation is normally the younger Maldegem Formation (marine clays and sands of Bartonian The Bartonian is, in the ICS's geolog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brussel Formation
The Brussel Formation ( nl, Formatie van Brussel; french: Formation de Bruxelles; abbreviation: Br) is a geologic formation in the subsurface of central Belgium. The formation is named after the Belgian capital, Brussels. It consists of shallow marine sandstone and calcareous sands, deposited in the sea that covered Belgium 45 million years ago, in the Eocene. The Brussel Formation crops out in Walloon Brabant and the north of the provinces of Namur and Hainaut. It is normally about 30 metres in thickness. In Flemish Brabant and Antwerp the formation can be found in the subsurface. The Brussel Formation is subdivided into five members: the Archennes Member ( conglomerates), the Bois de la Houssière Member (quartzites), the Chaumont-Gistoux Member ( glauconiferous quartzites), the Diegem Member (glauconiferous quartzite) and the Neerijse Member (glauconiferous calcareous sand). The formation consists either of cross-bedded non-calcareous sands alternating with thin beds of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zenne Group
The Zenne Group ( nl, Zenne Groep) is a group of rock strata in the subsurface of central and northwest Belgium. The group consists of three formations, all from the Ypresian and Lutetian ages (early Eocene, 50 to 40 million years old). These formation have their shallow marine facies in common. The three formations are: *the Aalter Formation, greenish sands and clays, found in East Flanders and West Flanders. *the Brussel Formation, marls and sands, found in Flemish and Walloon Brabant, Hainaut and Namur. *the Lede Formation, calcareous sands, found in almost all central Belgium. Stratigraphically on top of the Zenne Group are the late Eocene sands and clays of the Maldegem Formation The Maldegem Formation ( nl, Formatie van Maldegem; old name: Kallo Complex) is a geologic formation in the Belgian subsurface. The formation consists of alternating marine clay and sand strata, deposited during the late Eocene. The Maldegem For ..., which is not divided into a group. The Zenne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Age (geology)
The geologic time scale, or geological time scale, (GTS) is a representation of time based on the rock record of Earth. It is a system of chronological dating that uses chronostratigraphy (the process of relating strata to time) and geochronology (scientific branch of geology that aims to determine the age of rocks). It is used primarily by Earth scientists (including geologists, paleontologists, geophysicists, geochemists, and paleoclimatologists) to describe the timing and relationships of events in geologic history. The time scale has been developed through the study of rock layers and the observation of their relationships and identifying features such as lithologies, paleomagnetic properties, and fossils. The definition of standardized international units of geologic time is the responsibility of the International Commission on Stratigraphy (ICS), a constituent body of the International Union of Geological Sciences (IUGS), whose primary objective is to precisely define ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oedelem Member
Oedelem is a town in Beernem, a part of West Flanders, Belgium. Gallery File:Oedelem, de Sint Lambertuskerk oeg89281 in straatzicht foto8 2015-08-10 14.03.jpg, Oedelem, church: the Sint Lambertuskerk File:The river Bergbeek at the Weg naar Sint-Kruis.jpg, The river Bergbeek at the ''Weg naar Sint-Kruis Sint-Kruis ( vls, Sinte-Kruus) is a suburb of Bruges in the province of West Flanders in Belgium Belgium, ; french: Belgique ; german: Belgien officially the Kingdom of Belgium, is a country in Northwestern Europe. The country is border ...'' File:Oostveld - Pastorie 1.jpg, The rectory of External links Oedelem at City Review Populated places in West Flanders Beernem {{WestFlanders-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beernem Member
Beernem (; vls, Beirnem) is a rural municipality in the Belgian province of West Flanders, located southeast of Bruges. The municipality comprises the towns of Beernem proper, Oedelem Oedelem is a town in Beernem, a part of West Flanders, Belgium. Gallery File:Oedelem, de Sint Lambertuskerk oeg89281 in straatzicht foto8 2015-08-10 14.03.jpg, Oedelem, church: the Sint Lambertuskerk File:The river Bergbeek at the Weg naar Sint- ... and Sint-Joris. On January 1, 2006 Beernem had a total population of 14,642, mostly in Beernem proper and Oedelem. The total area is 71.68 km² which gives a population density of 204 inhabitants per km². Gallery File:Sint-Joris (Beernem) - Sint-Joriskerk 1.jpg, Saint George's church File:Beernem - Kasteel Bulskampveld 2.jpg, Kasteel Bulskampveld File:Beernem Psychiatrisch Centrum Sint-Amandus.JPG, Beernem Psychiatrisch Centrum Sint-Amandus References External links * * Municipalities of West Flanders {{WestFlanders- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossil
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood and DNA remnants. The totality of fossils is known as the ''fossil record''. Paleontology is the study of fossils: their age, method of formation, and evolutionary significance. Specimens are usually considered to be fossils if they are over 10,000 years old. The oldest fossils are around 3.48 billion years old to 4.1 billion years old. Early edition, published online before print. The observation in the 19th century that certain fossils were associated with certain rock strata led to the recognition of a geological timescale and the relative ages of different fossils. The development of radiometric dating techniques in the early 20th century allowed scientists to quantitatively measure the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
