|
Reeds Spring Formation
The Reeds Spring Formation is a geologic formation in southwestern Missouri. It preserves fossils dating back to the Osagean Series of the Mississippian subperiod. 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 Mississippian Missouri {{Carboniferous-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] |
Mississippian (geology)
The Mississippian ( , also known as Lower Carboniferous or Early Carboniferous) is a subperiod in the geologic timescale or a subsystem of the geologic record. It is the earlier of two subperiods of the Carboniferous period lasting from roughly 358.9 to 323.2 million years ago. As with most other geochronologic units, the rock beds that define the Mississippian are well identified, but the exact start and end dates are uncertain by a few million years. The Mississippian is so named because rocks with this age are exposed in the Mississippi Valley. The Mississippian was a period of marine transgression in the Northern Hemisphere: the sea level was so high that only the Fennoscandian Shield and the Laurentian Shield were dry land. The cratons were surrounded by extensive delta systems and lagoons, and carbonate sedimentation on the surrounding continental platforms, covered by shallow seas. In North America, where the interval consists primarily of marine limestones, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limestone
Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms when these minerals 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, a closely related rock, which contains a high percentage of the mineral dolomite, . ''Magnesian limestone'' is an obsolete and poorly-defined term used variously for dolomite, for lime ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shale
Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4) and tiny fragments (silt-sized particles) of other minerals, especially quartz and calcite.Blatt, Harvey and Robert J. Tracy (1996) ''Petrology: Igneous, Sedimentary and Metamorphic'', 2nd ed., Freeman, pp. 281–292 Shale is characterized by its tendency to split into thin layers ( laminae) less than one centimeter in thickness. This property is called '' fissility''. Shale is the most common sedimentary rock. The term ''shale'' is sometimes applied more broadly, as essentially a synonym for mudrock, rather than in the more narrow sense of clay-rich fissile mudrock. Texture Shale typically exhibits varying degrees of fissility. Because of the parallel orientation of clay mineral flakes in shale, it breaks into thin layers, often splintery and usually parallel to the otherwise indistinguishable bed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chert
Chert () is a hard, fine-grained sedimentary rock composed of microcrystalline or cryptocrystalline quartz, the mineral form of silicon dioxide (SiO2). Chert is characteristically of biological origin, but may also occur inorganically as a chemical precipitate or a diagenetic replacement, as in petrified wood. Chert is typically composed of the petrified remains of siliceous ooze, the biogenic sediment that covers large areas of the deep ocean floor, and which contains the silicon skeletal remains of diatoms, silicoflagellates, and radiolarians. Precambrian cherts are notable for the presence of fossil cyanobacteria. In addition to microfossils, chert occasionally contains macrofossils. However, some chert is devoid of any fossils. Chert varies greatly in color (from white to black), but most often manifests as gray, brown, grayish brown and light green to rusty redW.L. Roberts, T.J. Campbell, G.R. Rapp Jr., "Encyclopedia of Mineralogy, Second Edition", 1990. R.S. M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reeds Spring, Missouri
Reeds Spring is a city in Stone County, Missouri, United States. The population was 1,136 at the 2020 census. It is part of the Branson, Missouri Micropolitan Statistical Area. History The community has the name of Fitzhugh Reed, who settled at a spring near the original town site. Geography Reeds Spring is located at (36.745692, -93.382727). According to the United States Census Bureau, the city has a total area of , all land. Demographics 2010 census As of the census of 2010, there were 913 people, 374 households, and 259 families living in the city. The population density was . There were 453 housing units at an average density of . The racial makeup of the city was 95.3% White, 0.1% African American, 1.6% Native American, 0.8% Asian, 0.3% from other races, and 1.9% from two or more races. Hispanic or Latino of any race were 2.3% of the population. There were 374 households, of which 31.6% had children under the age of 18 living with them, 52.1% were marrie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stone County, Missouri
Stone County is located in the southwestern portion of the U.S. state of Missouri. As of the 2020 census, the population was 31,076. Its county seat is Galena. Stone County is part of the Branson, MO Micropolitan Statistical Area. History The county was officially organized on February 10, 1851, and is named after William Stone, an English pioneer and an early settler in Maryland who also served as Taney County Judge. In 1904, the White River Railway was extended through the rugged terrain of Stone and Taney counties. By then, both counties had had a sundown town policy for years, forbidding African Americans from living there. Geography According to the U.S. Census Bureau, the county has a total area of , of which is land and (9.2%) is water. Adjacent counties *Christian County (north) *Taney County (east) * Carroll County, Arkansas (south) * Barry County (west) * Lawrence County (northwest) National protected area *Mark Twain National Forest (part) Demographics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Missouri
Missouri is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. Ranking List of U.S. states and territories by area, 21st in land area, it is bordered by eight states (tied for the most with Tennessee): Iowa to the north, Illinois, Kentucky and Tennessee to the east, Arkansas to the south and Oklahoma, Kansas and Nebraska to the west. In the south are the Ozarks, a forested highland, providing timber, minerals, and recreation. The Missouri River, after which the state is named, flows through the center into the Mississippi River, which makes up the eastern border. With more than six million residents, it is the List of U.S. states and territories by population, 19th-most populous state of the country. The largest urban areas are St. Louis, Kansas City, Missouri, Kansas City, Springfield, Missouri, Springfield and Columbia, Missouri, Columbia; the Capital city, capital is Jefferson City, Missouri, Jefferson City. Humans have inhabited w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., federal district, five major unincorporated territories, nine United States Minor Outlying Islands, Minor Outlying Islands, and 326 Indian reservations. The United States is also in Compact of Free Association, free association with three Oceania, Pacific Island Sovereign state, sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Palau, Republic of Palau. It is the world's List of countries and dependencies by area, third-largest country by both land and total area. It shares land borders Canada–United States border, with Canada to its north and Mexico–United States border, with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the List of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elsey Formation
{{geodis ...
Elsey may refer to: Places Australia Northern Territory *Elsey, Northern Territory, a locality * Elsey National Park, a protected area *Elsey Station, a former pastoral lease * Electoral division of Elsey, a former electorate Germany *Elsey Abbey, a former women's religious house United States * Elsey, Missouri People * Bill Elsey (1921–2019), British racehorse trainer *Charles Elsey (1882–1966), British racehorse trainer * George Elsey (1918-2015), US Naval Commander during World War 2 *Joseph Ravenscroft Elsey (1834–1857), English-born naturalist, surgeon and explorer in Australia See also *Elseya ''Elseya'' is a genus of large side-necked turtles, commonly known as Australian snapping turtles, in the family Chelidae. Species in the genus ''Elseya'' are found in river systems in northern and northeastern Australia and throughout the river ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pierson Formation
Pierson or Piersons may refer to: Places *Pierson, Florida * Pierson, Iowa *Pierson, Manitoba * Pierson, Michigan *Pierson College Pierson College is a residential college at Yale University in New Haven, Connecticut. Opened in 1933, it is named for Abraham Pierson, a founder and the first rector of the Collegiate School, the college later known as Yale. With just under 500 ... of Yale University * Pierson Creek, a stream in Iowa * Piersons Lake, a lake in Minnesota Other uses * Pierson (surname) See also * Peirson, given name and surname * Pearson (other) {{disambiguation, geo ... [...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 W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
