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Chatsworth Formation
The Chatsworth Formation is a Cretaceous period sandstone geologic formation in the Simi Hills and western Santa Susana Mountains of southern California. It is found in western Los Angeles County and eastern Ventura County. The formation's thickness can be more than . Fossils The sedimentary marine formation preserves fossils dating from the Middle Campanian to Early Maestrichtian epochs of the Cretaceous period. It has diverse molluscan faunas. The most common taxa are: by Mary Stecheson, Department of Geological Sciences, California State Univ, Northridge. *ringiculid Biplica *naticids Gyrodes and Euspira *trocid Atira [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Formation (stratigraphy)
A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics (lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exposed in a geographical region (the stratigraphic column). It is the fundamental unit of lithostratigraphy, the study of strata or rock layers. A formation must be large enough that it can be mapped at the surface or traced in the subsurface. Formations are otherwise not defined by the thickness (geology), thickness of their rock strata, which can vary widely. They are usually, but not universally, tabular in form. They may consist of a single lithology (rock type), or of alternating beds of two or more lithologies, or even a heterogeneous mixture of lithologies, so long as this distinguishes them from adjacent bodies of rock. The concept of a geologic formation goes back to the beginnings of modern scientific geology. The term was used by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anchuras (genus)
Anchuras (also known as Rincón de Anchuras) is a municipality in Ciudad Real Province, Castile-La Mancha, Spain. It has a population of 342. According to the 2014 census, Anchuras municipality has a population of 202 inhabitants. The municipality's territory is located in the Montes de Toledo and forms an enclave between Toledo Province and Badajoz Province. History Currently we add "de los Montes", because it is integrated into the region of Los Montes (Ciudad Real), but this has not always been the case, because before it was called "Anchuras de la Jara", because it was included the southern lands of this region de La Jara, which were administered by Talavera de la Reina until well into the 16th century. At that time, the area that today is Anchuras formed part, at first, of the municipality of Sevilleja as a hamlet, until the Supreme Council of Castilla declared the territory of Anchuras an independent municipality in 1785. There are no data that allow us to establish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Upper Cretaceous Series Of North America
Upper may refer to: * Shoe upper or ''vamp'', the part of a shoe on the top of the foot * Stimulant, drugs which induce temporary improvements in either mental or physical function or both * ''Upper'', the original film title for the 2013 found footage film ''The Upper Footage ''The Upper Footage'' (also known as ''Upper'') is a 2013 found footage film written and directed by Justin Cole. First released on January 31, 2013 to a limited run of midnight theatrical screenings at Landmark’s Sunshine Cinema in New York Cit ...'' See also {{Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretaceous Fossil Record
The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of the entire Phanerozoic. The name is derived from the Latin ''creta'', "chalk", which is abundant in the latter half of the period. It is usually abbreviated K, for its German translation ''Kreide''. The Cretaceous was a period with a relatively warm climate, resulting in high eustatic sea levels that created numerous shallow inland seas. These oceans and seas were populated with now-extinct marine reptiles, ammonites, and rudists, while dinosaurs continued to dominate on land. The world was ice free, and forests extended to the poles. During this time, new groups of mammals and birds appeared. During the Early Cretaceous, flowering plants appeared and began to rapidly diversify, becoming the dominant group of plants across the Earth by th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
