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Bluefield Formation
The Bluefield Formation is a geologic formation in West Virginia. It preserves fossils dating back to the Mississippian subperiod of the Carboniferous period. Sediments of this age formed along a large marine basin lying in the region of what is now the Appalachian Plateau. The Bluefield Formation is the lowest section of the primarily siliciclastic Mauch Chunk Group, underlying the Stony Gap Sandstone Member of the Hinton Formation and overlying the limestone-rich Greenbrier Group. History As with many other units in southeast West Virginia, the Bluefield Formation was first named by Campbell (1896). At the time it was called the "Bluefield Shale". Reger & Price (1926) later renamed it to the Bluefield Group and supplied an extensive list of subunits. Subsequent publications further altered the name to Bluefield Formation while also naming the encompassing Mississippian sequence as the Mauch Chunk Group. As originally designated, the Bluefield Formation pertained to an area in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glen Lyn, Virginia
Glen Lyn is a town in Giles County, Virginia, United States, at the confluence of the East and New rivers. The population was 115 at the 2010 census, down from 151 at the 2000 census. It is part of the Blacksburg– Christiansburg Metropolitan Statistical Area. Geography Glen Lyn is located in northwestern Giles County at (37.373080, -80.860906), on both sides of the New River. It is bordered to the west by the East River and by the state of West Virginia. U.S. Route 460 passes through the town, leading east (upstream along the New River) to Rich Creek and west to Princeton, West Virginia. Pearisburg, the Giles County seat, is southeast (up the New River) via US 460, and Blacksburg is southeast. According to the United States Census Bureau, Glen Lyn has a total area of , of which are land and , or 12.22%, are water. Climate The climate in this area has mild differences between highs and lows, and there is adequate rainfall year-round. According to the Köp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
West Virginia
West Virginia is a state in the Appalachian, Mid-Atlantic and Southeastern regions of the United States.The Census Bureau and the Association of American Geographers classify West Virginia as part of the Southern United States while the Bureau of Labor Statistics classifies the state as a part of the Mid-Atlantic regionMid-Atlantic Home : Mid-Atlantic Information Office: U.S. Bureau of Labor Statistics" www.bls.gov. Archived. It is bordered by Pennsylvania to the north and east, Maryland to the east and northeast, Virginia to the southeast, Kentucky to the southwest, and Ohio to the northwest. West Virginia is the 10th-smallest state by area and ranks as the 12th-least populous state, with a population of 1,793,716 residents. The capital and largest city is Charleston. West Virginia was admitted to the Union on June 20, 1863, and was a key border state during the American Civil War. It was the only state to form by separating from a Confederate state, the second to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Summers County, West Virginia
Summers County is a county located in the U.S. state of West Virginia. As of the 2020 census, the population was 11,959. Its county seat is Hinton. The county was created by an act of the West Virginia Legislature on February 27, 1871, from parts of Fayette, Greenbrier, Mercer and Monroe counties and named in honor of George W. Summers (1804–68). Geography According to the United States Census Bureau, the county has a total area of , of which is land and (2.0%) is water. After gaining independence from Virginia in 1863, West Virginia's counties were divided into civil townships, with the intention of encouraging local government. This proved impractical in the heavily rural state, and in 1872 the townships were converted into magisterial districts. Summers County was initially divided into five townships: Forest Hill, Greenbrier, Green Sulphur, Jumping Branch, and Pipestem. Forest Hill consisted of territory received from Monroe County, where it had been part of a towns ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monroe County, West Virginia
Monroe County is a county in the U.S. state of West Virginia. As of the 2020 census, the population was 12,376. Its county seat is Union. Monroe County was the home of Andrew Summers Rowan of Spanish–American War fame, who is immortalized in Elbert Hubbard's classic ''A Message to Garcia''. The county was also the site of the 1928 discovery of the 34.48 carat (6.896 g) Jones Diamond by Grover C. Jones and William "Punch" Jones. Monroe County celebrates its own holiday, Farmers' Day. History Monroe County was created from Greenbrier County on January 14, 1799, and was named for Virginia civic figure James Monroe, who would be elected fifth President of the United States in November 1816. It was one of fifty Virginia counties that were admitted to the Union as the state of West Virginia on June 20, 1863, at the height of the Civil War. Monroe County did not participate in the creation of the new state, but was included by Congressional decree. Almost all the men from M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercer County, West Virginia
Mercer County is a county on the southeastern border of the U.S. state of West Virginia. At the 2020 census, the population was 59,664. Its county seat is Princeton. The county was originally established in the State of Virginia by act of its General Assembly on March 17, 1837, (WV County Etymology) using lands taken from Giles and Tazewell counties. Mercer County is part of the Bluefield, WV- VA Micropolitan Statistical Area. History *Battle of Clark's House (1862) Geography According to the United States Census Bureau, the county has a total area of , of which is land and (0.4%) is water. In 1863, West Virginia's counties were divided into civil townships, with the intention of encouraging local government. This proved impractical in the heavily rural state, and in 1872 the townships were converted into magisterial districts. Mercer County was divided into five districts: Beaver Pond, East River, Jumping Branch, Plymouth, and Rock. In the 1970s, Mercer County's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siliciclastic
Siliciclastic (or ''siliclastic'') rocks are clastic noncarbonate sedimentary rocks that are composed primarily of silicate minerals, such as quartz or clay minerals. Siliciclasic rock types include mudrock, sandstone, and conglomerate Conglomerate or conglomeration may refer to: * Conglomerate (company) * Conglomerate (geology) * Conglomerate (mathematics) In popular culture: * The Conglomerate (American group), a production crew and musical group founded by Busta Rhymes ** Co .... Siliciclastic sediments are silica-based sediments, lacking carbon compounds, which are formed from pre-existing rocks, by breakage, transportation and redeposition to form sedimentary rock.Oilfield Glossary: siliciclastic sediment. Retrieved 23 August 2018. References ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Appalachian Plateau
The Appalachian Plateau is a series of rugged dissected plateaus located on the western side of the Appalachian Mountains. The Appalachian Mountains are a mountain range that run down the Eastern United States. The Appalachian Plateau is the northwestern part of the Appalachian Mountains, stretching from New York to Alabama. The plateau is a second level United States physiographic region, covering parts of the states of New York, Pennsylvania, Ohio, Maryland, West Virginia, Virginia, Kentucky, Tennessee, Alabama, and Georgia. Geography and physical features The formation of the plateau began during the Paleozoic Era. Regional uplift during this time caused the area to rise altogether without changing the topography of the land. The eastern side of the plateau appears as a mountain range. This false appearance is due to a very steep slope on the eastern side known as the Allegheny Front. The eastern edge is the highest part of the Appalachian Plateau. In Pennsyl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Period (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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carboniferous
The Carboniferous ( ) is a geologic period and system of the Paleozoic that spans 60 million years from the end of the Devonian Period million years ago (Mya), to the beginning of the Permian Period, million years ago. The name ''Carboniferous'' means "coal-bearing", from the Latin '' carbō'' (" coal") and '' ferō'' ("bear, carry"), and refers to the many coal beds formed globally during that time. The first of the modern 'system' names, it was coined by geologists William Conybeare and William Phillips in 1822, based on a study of the British rock succession. The Carboniferous is often treated in North America as two geological periods, the earlier Mississippian and the later Pennsylvanian. Terrestrial animal life was well established by the Carboniferous Period. Tetrapods (four limbed vertebrates), which had originated from lobe-finned fish during the preceding Devonian, became pentadactylous in and diversified during the Carboniferous, including early amphibian lin ... [...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] |
Fossils
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 ab ... [...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] |
