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Albemarle Group
The Albemarle Group is a geologic group in North Carolina composed of metamorphosed mafic and felsic volcanic rock, sandstone, siltstone, shale, and mudstone. It is considered part of the Carolina Slate Belt and covers several counties in central North Carolina. It preserves fossils dating back to the Ediacaran period in the Floyd Church member. Description All five members of the Albemarle Group are composed of metamorphosed volcanic and sedimentary rocks. The Albemarle Group covers parts of Anson, Davidson, Carbarrus, Montgomery, Randolph, Rowan The rowans ( or ) or mountain-ashes are shrubs or trees in the genus ''Sorbus ''Sorbus'' is a genus of over 100 species of trees and shrubs in the rose family, Rosaceae. Species of ''Sorbus'' (''s.l.'') are commonly known as whitebeam, r ..., Stanly, and Union counties. It is part of the Carolina Slate Belt, which is characterized by metamorphic volcanic rich sedimentary rocks. The Albemarle Group falls in the Pi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Group (stratigraphy)
In geology, a group is a lithostratigraphic unit consisting of a series of related formations that have been classified together to form a group. Formations are the fundamental unit of stratigraphy. Groups may sometimes be combined into supergroups. Groups are useful for showing relationships between formations, and they are also useful for small-scale mapping or for studying the stratigraphy of large regions. Geologists exploring a new area have sometimes defined groups when they believe the strata within the groups can be divided into formations during subsequent investigations of the area. It is possible for only some of the strata making up a group to be divided into formations. An example of a group is the Glen Canyon Group, which includes (in ascending order) the Wingate Sandstone, the Moenave Formation, the Kayenta Formation, and the Navajo Sandstone. Each of the formations can be distinguished from its neighbor by its lithology, but all were deposited in the same vast ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mudstone
Mudstone, a type of mudrock, is a fine-grained sedimentary rock whose original constituents were clays or muds. Mudstone is distinguished from '' shale'' by its lack of fissility (parallel layering).Blatt, H., and R.J. Tracy, 1996, ''Petrology.'' New York, New York, W. H. Freeman, 2nd ed, 529 pp. The term ''mudstone'' is also used to describe carbonate rocks (limestone or dolomite) that are composed predominantly of carbonate mud. However, in most contexts, the term refers to siliciclastic mudstone, composed mostly of silicate minerals. The NASA Curiosity rover has found deposits of mudstone on Mars that contain organic substances such as propane, benzene and toluene. Definition There is not a single definition of mudstone that has gained general acceptance,Boggs 2006, p.143 though there is wide agreement that mudstones are fine-grained sedimentary rocks, composed mostly of silicate grains with a grain size less than . Individual grains this size are too small to be disting ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Geological Survey
The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization's work spans the disciplines of biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility. The agency was founded on March 3, 1879. The USGS is a bureau of the United States Department of the Interior; it is that department's sole scientific agency. The USGS employs approximately 8,670 people and is headquartered in Reston, Virginia. The USGS also has major offices near Lakewood, Colorado, at the Denver Federal Center, and Menlo Park, California. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on the occasion of its hundredt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greywacke
Greywacke or graywacke (German ''grauwacke'', signifying a grey, earthy rock) is a variety of sandstone generally characterized by its hardness, dark color, and poorly sorted angular grains of quartz, feldspar, and small rock fragments or lithic fragments set in a compact, clay-fine matrix. It is a texturally immature sedimentary rock generally found in Paleozoic strata. The larger grains can be sand- to gravel-sized, and matrix materials generally constitute more than 15% of the rock by volume. The term "greywacke" can be confusing, since it can refer to either the immature (rock fragment) aspect of the rock or its fine-grained (clay) component. The origin of greywacke was unknown until turbidity currents and turbidites were understood, since, according to the normal laws of sedimentation, gravel, sand and mud should not be laid down together. Geologists now attribute its formation to submarine avalanches or strong turbidity currents. These actions churn sediment and cause mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piedmont (United States)
The Piedmont is a plateau region located in the Eastern United States. It is situated between the Atlantic coastal plain and the main Appalachian Mountains, stretching from New York in the north to central Alabama in the south. The Piedmont Province is a physiographic province of the larger Appalachian division which consists of the Gettysburg-Newark Lowlands, the Piedmont Upland and the Piedmont Lowlands sections. The Atlantic Seaboard fall line marks the Piedmont's eastern boundary with the Coastal Plain. To the west, it is mostly bounded by the Blue Ridge Mountains, the easternmost range of the main Appalachians. The width of the Piedmont varies, being quite narrow above the Delaware River but nearly 300 miles (475 km) wide in North Carolina. The Piedmont's area is approximately . The French word ''Piedmont'' comes from the it, Piemonte, meaning " foothill", ultimately from Latin "pedemontium", meaning "at the foot of the mountains", similar to the name of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Union County, North Carolina
Union County is a county located in the U.S. state of North Carolina. As of the 2020 census, the population was 238,267. Its county seat is Monroe. Union County is included in the Charlotte-Concord- Gastonia, NC- SC Metropolitan Statistical Area. History The county was formed in 1842 from parts of Anson County and Mecklenburg County. Its name was a compromise between Whigs, who wanted to name the new county for Henry Clay, and Democrats, who wanted to name it for Andrew Jackson. The Helms, Starnes, McRorie, and Belk families were prominent in the town as well as Monroe and Charlotte. Most of these families came from Goose Creek Township. Monroe, the county seat of Union County, also became a focal point during the Civil Rights Movement. In 1958, local NAACP Chapter President Robert F. Williams defended a nine-year-old African-American boy who had been kissed by a white girl in an incident known as the Kissing Case. A second African-American boy, aged seven, was also convict ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stanly County, North Carolina
Stanly County is a county in the U.S. state of North Carolina. As of the 2020 census, the population was 62,504. Its county seat is Albemarle. Stanly County comprises the Albemarle, NC Micropolitan Statistical Area, which is also included in the Charlotte-Concord, NC-South Carolina Combined Statistical Area. History The site of modern-day Stanly County was originally peopled by small tribes of hunter-gatherers and Mound Builders whose artifacts and settlements have been dated back nearly 10,000 years. Large-scale European settlement of the region came in the mid-18th century via two primary waves: immigrants of Dutch, Scots-Irish and German descent moved from Pennsylvania and New Jersey seeking enhanced religious and political tolerance, while immigrants of English backgrounds came to the region from Virginia and the Cape Fear River Basin in Eastern North Carolina. In early English colonial times, the Stanly County area was politically part of the New Hanover Precinct, out ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rowan County, North Carolina
Rowan County is a County (United States), county in the U.S. state of North Carolina that was formed in 1753, as part of the British Province of North Carolina. It was originally a vast territory with unlimited western boundaries, but its size was reduced to 524 sq mi after several counties were formed from Rowan County in the 18th and 19th centuries. As of the 2020 United States census, 2020 census, its population was 146,875. Its county seat, Salisbury, North Carolina, Salisbury, is the oldest continuously populated European-American town in the western half of North Carolina. Rowan County is located northeast of Charlotte, North Carolina, Charlotte, and is considered part of the Charlotte metropolitan area. History Early history The first Europeans to enter what is now Rowan County were members of the Spanish expedition of Juan Pardo (explorer), Juan Pardo in 1567. They established a fort and a mission in the native village of Guatari, believed to be located near the Yadkin Ri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Randolph County, North Carolina
Randolph County is a county located in the U.S. state of North Carolina. As of the 2020 census, the population was 144,171. Its county seat is Asheboro. Randolph County is included in the Greensboro- High Point, NC Metropolitan Statistical Area, which is also included in the Greensboro-Winston-Salem-High Point, NC Combined Statistical Area. In 2010, the center of population of North Carolina was located in Randolph County, near the town of Seagrove. History Some of the first European settlers in this area of the Piedmont and what would become the county were English Quakers, who settled along the Haw, Deep, and Eno rivers The county was formed in 1779 from Guilford County. It was named for Peyton Randolph, first president of the Continental Congress. County formation The Legislature of 1779, then sitting at Halifax, passed an act providing for the formation of a new county from parts of Guilford and Rowan, to be called Randolph. Randolph County was the original locatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montgomery County, North Carolina
Montgomery County is a rural county located in the southern Piedmont of the U.S. state of North Carolina. As of the 2020 census, the population was 25,751. Its county seat is Troy. History The county was formed in January 1779, by an act of the North Carolina General Assembly of 1778, from part of Anson County. It was named in honor of Richard Montgomery, an American Revolutionary War general killed in 1775 while attempting to capture Quebec City, Canada. The North Carolina General Assembly of 1779 named James Roper, James Allen, Cornelius Robeson, Samuel Person, and John Collier of Randolph County as the commissioners of Montgomery County and charged them with determining the location for a county seat. They chose what developed as Troy. In 1841, the part of Montgomery County west of the Yadkin/Pee Dee River became Stanly County. Geography According to the U.S. Census Bureau, the county has a total area of , of which is land and (2.0%) is water. It is situat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cabarrus County, North Carolina
Cabarrus County ( ) , from the North Carolina Collection's website at the . Retrieved February 8, 2013. is a located in the south-central part of the U.S. state of . As of the 2020 census, the population was 225,80 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Davidson County, North Carolina
Davidson County is a county located in the U.S. state of North Carolina. As of the 2020 census, the population was 168,930. Its county seat is Lexington, and its largest city is Thomasville. Davidson County is included in the Winston-Salem, NC Metropolitan Statistical Area, which is also included in the Greensboro-Winston-Salem- High Point, NC Combined Statistical Area. Parts of Davidson County are in the Yadkin Valley wine region. History The original North Carolina county of this name was created in 1786 what was then the far western portion of North Carolina, with its county seat at Nashville and a territory covering most of what is now Middle Tennessee. When Tennessee was established as a separate state in 1796, this county became Davidson County, Tennessee. The current North Carolina county was formed in 1822 from Rowan County. It was named after Brigadier General William Lee Davidson, an American Revolutionary War general killed at the Battle of Cowan's Ford on t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
