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Consuelo Formation
The Consuelo Formation is a geologic formation in Cuba. It preserves fossils dating back to the Priabonian period. The formation is correlated with the Chapapote Formation of Mexico and the Jackson Formation of the United States. at .org Description The Consuelo Formation was described by Bermúdez in 1950 based on a section of s in the Consuelo El Tejar quarry in .[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Formation (geology)
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 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 Abraham Gottlob Wer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossilworks
Fossilworks is a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals, plants, and microorganisms. History The Paleobiology Database (PBDB) originated in the NCEAS-funded Phanerozoic Marine Pale ..., a large relational database assembled by hundreds of paleontologists from around the world. History Fossilworks was created in 1998 by John Alroy and is housed at Macquarie University. It includes many analysis and data visualization tools formerly included in the Paleobiology Database.{{cite web, title=Frequently asked questions, url=http://www.fossilworks.org/cgi-bin/bridge.pl?page=FAQ, publisher=Fossilworks, access-date=17 December 2021 References {{Reflist External links {{Wikidata property, P842 * [Baidu] |
Limestone Formations
Limestone (calcium carbonate ) is a type of carbonate rock, carbonate sedimentary rock which is the main source of the material Lime_(material), lime. It is composed mostly of the minerals calcite and aragonite, which are different Polymorphism (materials science), crystal forms of . Limestone forms when these minerals Precipitation (chemistry), precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes, such as the accumulation of corals and shells in the sea, have likely been more important for the last 540 million years. Limestone often contains fossils which provide scientists with information on ancient environments and on the evolution of life. About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone. The remaining carbonate rock is mostly Dolomite (rock), dolomite, a closely related rock, which contains a high percentage of the mineral Dolomite (m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marl Formations
Marl is an earthy material rich in carbonate minerals, clays, and silt. When hardened into rock, this becomes marlstone. It is formed in marine or freshwater environments, often through the activities of algae. Marl makes up the lower part of the cliffs of Dover, and the Channel Tunnel follows these marl layers between France and the United Kingdom. Marl is also a common sediment in post-glacial lakes, such as the marl ponds of the northeastern United States. Marl has been used as a soil conditioner and neutralizing agent for acid soil and in the manufacture of cement. Description Marl or marlstone is a carbonate-rich mud or mudstone which contains variable amounts of clays and silt. The term was originally loosely applied to a variety of materials, most of which occur as loose, earthy deposits consisting chiefly of an intimate mixture of clay and calcium carbonate, formed under freshwater conditions. These typically contain 35–65% clay and 65–35% carbonate. The ter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleogene Cuba
The Paleogene ( ; also spelled Palaeogene or Palæogene; informally Lower Tertiary or Early Tertiary) is a geologic period and system that spans 43 million years from the end of the Cretaceous Period million years ago (Mya) to the beginning of the Neogene Period Mya. It is the beginning of the Cenozoic Era of the present Phanerozoic Eon. The earlier term Tertiary Period was used to define the span of time now covered by the Paleogene Period and subsequent Neogene Period; despite no longer being recognised as a formal stratigraphic term, 'Tertiary' is still widely found in earth science literature and remains in informal use. Paleogene is often abbreviated "Pg" (but the United States Geological Survey uses the abbreviation PE for the Paleogene on the Survey's geologic maps). During the Paleogene, mammals diversified from relatively small, simple forms into a large group of diverse animals in the wake of the Cretaceous–Paleogene extinction event that ended the preceding Cre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geologic Formations Of Cuba
Geology () is a branch of natural science concerned with Earth and other astronomical objects, the features or rocks of which it is composed, and the processes by which they change over time. Modern geology significantly overlaps all other Earth sciences, including hydrology, and so is treated as one major aspect of integrated Earth system science and planetary science. Geology describes the structure of the Earth on and beneath its surface, and the processes that have shaped that structure. It also provides tools to determine the relative and absolute ages of rocks found in a given location, and also to describe the histories of those rocks. By combining these tools, geologists are able to chronicle the geological history of the Earth as a whole, and also to demonstrate the age of the Earth. Geology provides the primary evidence for plate tectonics, the evolutionary history of life, and the Earth's past climates. Geologists broadly study the properties and processes of Earth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Pinar Del RÃo
The University of Pinar del RÃo "Hermanos Saiz Montes de Oca" (Spanish: ''Universidad de Pinar del RÃo "Hermanos SaÃz Montes de Oca"'', UPR) is a public university located in Pinar del RÃo, Cuba. It was founded in 1972. See also *Education in Cuba *List of universities in Cuba References External links * Universities in Cuba University of Pinar del Rio A university () is an educational institution, institution of higher education, higher (or Tertiary education, tertiary) education and research which awards academic degrees in several Discipline (academia), academic disciplines. Universities ty ... Educational institutions established in 1972 Buildings and structures in Pinar del RÃo Province {{Cuba-university-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Fossiliferous Stratigraphic Units In Cuba
The Paleobiology Database lists no known fossiliferous stratigraphic units in Dominica, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines. The database also records no fossiliferous stratigraphic units within several regions of the Caribbean like the Archipelago of San Andrés, Providencia and Santa Catalina, Guadeloupe, Martinique, Bonaire, Saba, Sint Eustatius, and Nueva Esparta. Antigua and Barbuda The Bahamas Barbados Cuba Dominican Republic Grenada Haiti Jamaica Trinidad and Tobago Dependencies of France The Paleobiology Database lists no known fossiliferous stratigraphic units in the French dependencies of St. Barthélemy or St. Martin. Dependencies of the Netherlands The Paleobiology Database lists no known fossiliferous stratigraphic units in the Dutch dependencies of Aruba, Bonaire, Saba, Sint Eustatius and Sint Maarten. Curaçao Dependencies of the United Kingdom The Paleobiology Data ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Histocidaris Sanchezi
''Histocidaris'' is a genus of sea urchins in the family Histocidaridae. Some species are known from the fossil record. Species * '' Histocidaris acutispina'' Mortensen, 1927 * '' Histocidaris australiae'' Mortensen, 1928 * '' Histocidaris carinata'' Mortensen, 1928 * '' Histocidaris cobosi'' (A. Agassiz, 1898) * '' Histocidaris crassispina'' Mortensen, 1928 * ''Histocidaris denticulata'' Koehler, 1927 * ''Histocidaris elegans'' (A. Agassiz, 1879) * '' Histocidaris formosa'' Mortensen, 1928 * ''Histocidaris geneffensis'' Lambert, 1932 †* ''Histocidaris longicollis'' Hoggett & Rowe, 1986 * ''Histocidaris magnifica'' Mortensen, 1928 * ''Histocidaris mckayi'' Fell, 1954 †* ''Histocidaris misakiensis'' (Yoshiwara, 1898) * ''Histocidaris nuttingi'' Mortensen, 1926 * ''Histocidaris oranensis'' Lambert, 1931 †* ''Histocidaris purpurata'' (Thomson, 1872) * ''Histocidaris recurvata'' Mortensen, 1928 * ''Histocidaris sharreri'' (A. Agassiz, 1880) * ''Histocidaris variabilis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cidaris Cubensis
''Cidaris'' is a genus of pencil sea urchins. Species According to the World Register of Marine Species (WoRMS), the genus Cidaris contains the following extant species *''Cidaris abyssicola'' (Agassiz, 1869) *''Cidaris annulata'' (Gray, 1855) *''Cidaris baculosa'' (Lamarck, 1816) *''Cidaris blakei'' (Agassiz 1878) *''Cidaris cidaris'' (Linnaeus, 1758) *''Cidaris mabahissae'' ( Mortensen, 1939) *''Cidaris nuda'' ( Mortensen, 1903) *''Cidaris rugosa'' (Clark, 1907) *''Cidaris thouarsii'' (Agassiz & Desor, 1846) Extinct species or names brought to synonymy * †''Cidaris aculeata'' * †''Cidaris aialensis'' * †''Cidaris alpina'' * †''Cidaris alternata'' * †''Cidaris austriaca'' * †''Cidaris avena'' * †''Cidaris biconica'' * †''Cidaris biformis'' * †''Cidaris braunii'' * †''Cidaris buchii'' * †''Cidaris caudex'' * †''Cidaris cingulata'' * †''Cidaris coralliophila'' * †''Cidaris costalarensis'' * †''Cidaris costata'' * †''Cidaris costeanensis'' * â ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Micrite
Micrite is a limestone constituent formed of calcareous particles ranging in diameter up to four μm formed by the recrystallization of lime mud. Flügel, Erik, ''Microfacies of Carbonate Rocks: Analysis, Interpretation and Application,'' Springer, pp 74-94, 2004 The term was coined in 1959 by Robert Folk for his carbonate rock classification system. Micrite is derived from MICRocrystalline calcITE. In the Folk classification micrite is a carbonate rock dominated by fine-grained calcite. Carbonate rocks that contain fine-grained calcite in addition to allochems are named ''intramicrite'', ''oomicrite'', ''biomicrite'' or ''pelmicrite'' under the Folk classification depending on the dominant allochem. Micrite is lime mud, carbonate of mud grade. Micrite as a component of carbonate rocks can occur as a matrix, as micrite envelopes around allochems or as peloids Peloids are allochems that are composed of micrite, irrespective of size, shape, or origin. The two primary types of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
