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Derby-Doerun Dolomite
The Derby-Doerun Dolomite is a Cambrian geologic formation exposed in southeast Missouri. Originally the Derby and Doerun were originally considered separate formations, but now considered a single unit. The combined name is from the Derby Mine and the Doe Run Lead Company of the Old Lead Belt. See also * List of fossiliferous stratigraphic units in Missouri * Paleontology in Missouri Paleontology in Missouri refers to paleontological research occurring within or conducted by people from the U.S. state of Missouri. The geologic column of Missouri spans all of geologic history from the Precambrian to present with the exception ... References * Cambrian Missouri Dolomite formations Geography of St. Francois County, Missouri Cambrian System of North America Geologic formations of Missouri {{US-geologic-formation-stub ... [...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 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 W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geography Of St
Geography (from Greek: , ''geographia''. Combination of Greek words ‘Geo’ (The Earth) and ‘Graphien’ (to describe), literally "earth description") is a field of science devoted to the study of the lands, features, inhabitants, and phenomena of Earth. The first recorded use of the word γεωγραφία was as a title of a book by Greek scholar Eratosthenes (276–194 BC). Geography is an all-encompassing discipline that seeks an understanding of Earth and its human and natural complexities—not merely where objects are, but also how they have changed and come to be. While geography is specific to Earth, many concepts can be applied more broadly to other celestial bodies in the field of planetary science. One such concept, the first law of geography, proposed by Waldo Tobler, is "everything is related to everything else, but near things are more related than distant things." Geography has been called "the world discipline" and "the bridge between the human and t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dolomite Formations
Dolomite may refer to: * Dolomite (mineral), a carbonate mineral * Dolomite (rock), also known as dolostone, a sedimentary carbonate rock * Dolomite, Alabama, United States, an unincorporated community * Dolomite, California, United States, an unincorporated community * Dolomites, a section of the Alps * Triumph Dolomite (1934–1940), a sporting car made by Triumph Motor Company * Triumph Dolomite, a small car made by the British Leyland Corporation in the 1970s and 1980s * Manila Bay Beach, informally known as "Dolomite Beach", an urban artificial beach in Manila, Philippines See also *'' Dolemite'', 1975 blaxploitation feature film and the name of its principal character **'' Shaolin Dolemite'', a 1999 in-name-only sequel to ''Dolemite'' **"Dolemite", the opening track on '' Tore Down House'', a 1997 album by Scott Henderson; the track features samples from the film *'' Dolemite Is My Name'', 2019 American biographical comedy film *'' Dolomiten'', a German-language newspaper pub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambrian Missouri
The Cambrian Period ( ; sometimes symbolized Ꞓ) was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 53.4 million years from the end of the preceding Ediacaran Period 538.8 million years ago (mya) to the beginning of the Ordovician Period mya. Its subdivisions, and its base, are somewhat in flux. The period was established as "Cambrian series" by Adam Sedgwick, who named it after Cambria, the Latin name for 'Cymru' (Wales), where Britain's Cambrian rocks are best exposed. Sedgwick identified the layer as part of his task, along with Roderick Murchison, to subdivide the large "Transition Series", although the two geologists disagreed for a while on the appropriate categorization. The Cambrian is unique in its unusually high proportion of sedimentary deposits, sites of exceptional preservation where "soft" parts of organisms are preserved as well as their more resistant shells. As a result, our understanding of the Cambrian biolo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleontology In Missouri
Paleontology in Missouri refers to paleontological research occurring within or conducted by people from the U.S. state of Missouri. The geologic column of Missouri spans all of geologic history from the Precambrian to present with the exception of the Permian, Triassic, and Jurassic. Brachiopods are probably the most common fossils in Missouri. During the early Paleozoic, Missouri was covered by a warm shallow sea that would come to be home to creatures like ''Archimedes'', brachiopods, shelled cephalopods, conodonts, corals, crinoids, armored fishes, and trilobites. During the Carboniferous a rich flora developed on land. Primitive tetrapods left behind footprints that would later fossilize. By the end of that period the sea had disappeared from the state. The Permian, Triassic, and Jurassic are missing from the local rock record. At that time southeastern Missouri was covered in seawater. On land, the state was home to dinosaurs. Missouri remained partially covered by seawate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Fossiliferous Stratigraphic Units In Missouri
This article contains a list of fossil-bearing stratigraphic units in the state of Missouri, U.S. Sites See also * Paleontology in Missouri References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Missouri Missouri Stratigraphic units A stratigraphic unit is a volume of rock of identifiable origin and relative age range that is defined by the distinctive and dominant, easily mapped and recognizable petrographic, lithologic or paleontologic features (facies) that characterize ... Stratigraphy of Missouri Missouri geography-related lists United States geology-related lists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lead Belt
The Southeast Missouri Lead District, commonly called the Lead Belt, is a lead mining district in the southeastern part of Missouri. Counties in the Lead Belt include Saint Francois, Crawford, Dent, Iron, Madison, Reynolds, and Washington. This mining district is the most important and critical lead producer in the United States.http://pubs.usgs.gov/sir/2008/5140/pdf/Chapter1.pdf Seeger, Cheryl M., ''History of Mining in the Southeast Missouri Lead District and Description of Mine Processes, Regulatory Controls, Environmental Effects, and Mine Facilities in the Viburnum Trend Subdistrict'' in Kleeschulte, M.J., ed., 2008, Hydrologic investigations concerning lead mining issues in southeastern Missouri: U.S. Geological Survey Scientific Investigations Report 2008–5140, Chapter 1 History The potential for lead mining in Southeast Missouri was first discovered and documented in 1700 by Father James Gravier. Philip Francois Renault of France led a large exploratory m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambrian
The Cambrian Period ( ; sometimes symbolized Ꞓ) was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 53.4 million years from the end of the preceding Ediacaran Period 538.8 million years ago (mya) to the beginning of the Ordovician Period mya. Its subdivisions, and its base, are somewhat in flux. The period was established as "Cambrian series" by Adam Sedgwick, who named it after Cambria, the Latin name for 'Cymru' (Wales), where Britain's Cambrian rocks are best exposed. Sedgwick identified the layer as part of his task, along with Roderick Murchison, to subdivide the large "Transition Series", although the two geologists disagreed for a while on the appropriate categorization. The Cambrian is unique in its unusually high proportion of sedimentary deposits, sites of exceptional preservation where "soft" parts of organisms are preserved as well as their more resistant shells. As a result, our understanding of the Cambria ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Upper Cambrian
The Furongian is the fourth and final epoch and series of the Cambrian. It lasted from to million years ago. It succeeds the Miaolingian series of the Cambrian and precedes the Lower Ordovician Tremadocian Stage. It is subdivided into three stages: the Paibian, Jiangshanian and the unnamed 10th stage of the Cambrian. Naming The Furongian was also known as the Cambrian Series 4, and the name replaced the older term Upper Cambrian and equivalent to the local term Hunanian. The present name was ratified by the International Commission on Stratigraphy in 2003. () means 'lotus' in Mandarin and refers to Hunan which is known as the "lotus state". Definition The lower boundary is defined in the same way as the GSSP of the Paibian Stage. Both begin with the first appearance of the trilobite ''Glyptagnostus reticulatus'' around million years ago. The upper boundary is the lower boundary and GSSP of the Tremadocian Stage which is the first appearance of the conodont ''Iapetognathus fl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Davis Formation
The Davis Formation is a geologic formation in Indiana and Missouri. It preserves fossils dating back to the Cambrian period. See also * List of fossiliferous stratigraphic units in Indiana * List of fossiliferous stratigraphic units in Missouri This article contains a list of fossil-bearing stratigraphic units in the state of Missouri, U.S. Sites See also * Paleontology in Missouri References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Missouri Missouri Stratigraphi ... References * Cambrian Indiana Cambrian Missouri Cambrian southern paleotemperate deposits Cambrian southern paleotropical deposits {{US-geologic-formation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potosi Formation
The Potosi Formation is a geologic formation in Missouri, Illinois and Indiana. It preserves fossils dating back to the Cambrian period. Paleofauna Monoplacophora * '' Gayneoconus'' : ''G. echolsi'' See also * List of fossiliferous stratigraphic units in Missouri * Paleontology in Missouri Paleontology in Missouri refers to paleontological research occurring within or conducted by people from the U.S. state of Missouri. The geologic column of Missouri spans all of geologic history from the Precambrian to present with the exception ... References * Cambrian Missouri Dolomite formations Geography of St. Francois County, Missouri Cambrian System of North America Geologic formations of Missouri Cambrian southern paleotropical deposits {{Missouri-geologic-formation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
