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Richmond Basin
The Richmond Basin was one of the Eastern North America Rift Basins. It lies over Swift Creek Reservoir from Interstate 64 to the Appomattox River. Extent The Richmond Basin is a rift basin, making a north to south double pointed oval, with the eastern edge over the Swift Creek Reservoir, with the northern point at interstate 64, spanning the James River, with the southern point at the Appomattox River. Richmond Basin geology The Richmond Basin is 205 to 245 million years old. Pangea divided and many small rifts split opened in the earth in addition to the large one that became the Atlantic Ocean. When Richmond rift opened and filled with swamps from water in the Pamunkey River, sediment filled in over the swamps and the sedimentary pressure converted organic plant material into coal. This weight is less pressure than coal deposits created when the continents were pushing together and raising up mountains. Semi-anthracite and anthracite are often created by such tectonic squeezi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastern North America Rift Basins
The Eastern North America Rift Basins are a series of sediment-filled '' aborted rifts'' created by large-scale continental extension. Their positions closely mirror the eastern coast of North America. Sediments and volcanic material from the rift basins are known as the Newark Supergroup. Geology Approximately 220 million years ago, during the late Triassic Period, the supercontinent Pangaea began to break apart. The focus of the rifting began somewhere between where present-day eastern North America and northwestern Africa were joined. As in all rifting environments, grabens formed. Many of these grabens were created, but for some of them extension stopped before full rifting occurred. Where only partial rifting occurred, basins formed, analogous to the present-day Basin and Range Province in the western United States. By definition, a basin is any area that collects sediments. These "aborted rifts" (rifts that are tectonically inactive and no longer collecting sediments) extend ... [...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 beddin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richmond, Virginia
(Thus do we reach the stars) , image_map = , mapsize = 250 px , map_caption = Location within Virginia , pushpin_map = Virginia#USA , pushpin_label = Richmond , pushpin_map_caption = Location within Virginia##Location within the contiguous United States , pushpin_relief = yes , coordinates = , subdivision_type = Country , subdivision_name = , subdivision_type1 = U.S. state, State , subdivision_name1 = , established_date = 1742 , , named_for = Richmond, London, Richmond, United Kingdom , government_type = , leader_title = List of mayors of Richmond, Virginia, Mayor , leader_name = Levar Stoney (Democratic Party (United States), D) , total_type = City , area_magnitude = 1 E8 , area_total_sq_mi = 62.57 , area_land_sq_mi = 59.92 , area_ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manchester, Richmond, Virginia
Manchester is a former independent city in Virginia in the United States. Prior to receiving independent status, it served as the county seat of Chesterfield County, between 1870 and 1876. Today, it is a part of the city of Richmond, Virginia. Originally known as Manastoh and later Rocky Ridge, it was located on the south bank of the James River at the fall line opposite the state capital city of Richmond, on the north side of the river. Manchester was an active port city, and was a port of entry for slave ships principally in the 18th century. The port shipped out tobacco and coal which was transported 13 miles overland from the Midlothian-area mines on the Midlothian Turnpike, first paved toll road in Virginia in 1807, and the Chesterfield Railroad, the state's first in 1831. Manchester became an incorporated town in 1769 and an independent city in 1874. In 1910, it merged by mutual agreement with the larger state capital City of Richmond, achieving another "first" as the earli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chesterfield Railroad
The Chesterfield Railroad was located in Chesterfield County, Virginia. It was a long mule-and-gravity powered line that connected the Midlothian coal mines with wharves that were located at the head of navigation on the James River just below the Fall Line at Manchester (on the south bank directly across from Richmond). It began operating in 1831 as Virginia's first common carrier railroad. Although it was dismantled before the American Civil War after being supplanted by the steam-powered Richmond and Danville Railroad, several portions of the embankments for the roadbed are extant in Chesterfield County near present-day Midlothian Turnpike. History Coal mining in the Midlothian area of Chesterfield County began in the 18th century. Around 1701, French Huguenot settlers to the area discovered the existence of the coalfield. The coalfield was part of the Richmond Basin which is one of the Eastern North America Rift Basins which contains some sedimentary rock and bituminous coal. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chesterfield County, Virginia
Chesterfield County is located just south of Richmond, Virginia, Richmond in the Commonwealth (U.S. state), Commonwealth of Virginia. The county's borders are primarily defined by the James River to the north and the Appomattox River to the south. Its county seat is Chesterfield Court House, Virginia, Chesterfield Court House. Chesterfield County was formed in 1749 from parts of Henrico County, Virginia, Henrico County. It was named for Philip Stanhope, 4th Earl of Chesterfield, a prominent English statesman who had been the Lord Lieutenant of Ireland. As of the 2020 United States Census, 2020 census, the population was 364,548 making it the fourth-most populous county in Virginia (behind Fairfax County, Virginia, Fairfax, Prince William County, Virginia, Prince William, and Loudoun County, Virginia, Loudoun, respectively). Chesterfield County is part of the Greater Richmond Region, and the county refers to much of the northern portion of the county as “North Chesterfield.” ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Midlothian, Virginia
Midlothian ( ) is an unincorporated area in Chesterfield County, Virginia, U.S. Settled as a coal town, Midlothian village experienced suburbanization effects and is now part of the western suburbs of Richmond, Virginia south of the James River in the Greater Richmond Region. Because of its unincorporated status, Midlothian has no formal government, and the name is used to represent the original small Village of Midlothian and a vast expanse of Chesterfield County in the northwest portion of Southside Richmond served by the Midlothian post office. The Village of Midlothian was named for the early 18th-century coal mining enterprises of the Wooldridge family. Incorporated in 1836, their Mid-Lothian Mining and Manufacturing Company employed free and enslaved people to do the deadly work of digging underground. Midlothian is the site of the first commercially-mined coal in the Colony of Virginia and North America. By the early 18th century, several mines were being developed in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boscobel Complex
The Boscobel complex (originally "Boscabel bowlder beds") is unit of interlayered granite and gneiss within Goochland and Powhatan Counties, Virginia. The area had been mapped as the ''Petersburg Granite'' in 1970 by B. K. Goodwin. The complex is mapped in a single, fault-bound area ( horst) approximately 9 km long. It lies on the west side of the Richmond Basin, a Mesozoic rift basin, and on the east margin of the ''Goochland Terrane'', a section of the Piedmont of Virginia that is tectonically distinct from the surrounding rocks. It is quarried for aggregate at the Boscobel Plant of the Luck Stone Corporation, near Manakin.David B. Spears, Nick H. Evans, Patrick C. Finnerty, and Katherine E. Lang, 2022. ''The Goochland Terrane Revisited – Insights from Recent Mapping, Geophysics, and Geochronology''. The 52nd Annual Virginia Geological Field Conference, November 11–12, 2022. (Fieldtrip guidebook) Description The Boscobel complex's consists of two interfingered li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sulphur
Sulfur (or sulphur in British English) is a chemical element with the symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula S8. Elemental sulfur is a bright yellow, crystalline solid at room temperature. Sulfur is the tenth most abundant element by mass in the universe and the fifth most on Earth. Though sometimes found in pure, native form, sulfur on Earth usually occurs as sulfide and sulfate minerals. Being abundant in native form, sulfur was known in ancient times, being mentioned for its uses in ancient India, ancient Greece, China, and ancient Egypt. Historically and in literature sulfur is also called brimstone, which means "burning stone". Today, almost all elemental sulfur is produced as a byproduct of removing sulfur-containing contaminants from natural gas and petroleum.. Downloahere The greatest commercial use of the element is the production o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coke (fuel)
Coke is a grey, hard, and porous coal-based fuel with a high carbon content and few impurities, made by heating coal or oil in the absence of air—a destructive distillation process. It is an important industrial product, used mainly in iron ore smelting, but also as a fuel in stoves and forges when air pollution is a concern. The unqualified term "coke" usually refers to the product derived from low-ash and low-sulphur bituminous coal by a process called coking. A similar product called petroleum coke, or pet coke, is obtained from crude oil in oil refineries. Coke may also be formed naturally by geologic processes.B. Kwiecińska and H. I. Petersen (2004): "Graphite, semi-graphite, natural coke, and natural char classification — ICCP system". ''International Journal of Coal Geology'', volume 57, issue 2, pages 99-116. History China Historical sources dating to the 4th century describe the production of coke in ancient China. The Chinese first used coke for heating ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oolite
Oolite or oölite (''egg stone'') is a sedimentary rock formed from ooids, spherical grains composed of concentric layers. The name derives from the Ancient Greek word for egg (ᾠόν). Strictly, oolites consist of ooids of diameter 0.25–2 millimetres; rocks composed of ooids larger than 2 mm are called pisolites. The term ''oolith'' can refer to oolite or individual ooids. Composition Ooids are most commonly composed of calcium carbonate ( calcite or aragonite), but can be composed of phosphate, clays, chert, dolomite or iron minerals, including hematite. Dolomitic and chert ooids are most likely the result of the replacement of the original texture in limestone. Oolitic hematite occurs at Red Mountain near Birmingham, Alabama, along with oolitic limestone. They are usually formed in warm, supersaturated, shallow, highly agitated marine water intertidal environments, though some are formed in inland lakes. The mechanism of formation starts with a small fragment of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
