What type of elevation does Allegheny Front and Appalachian Platea have in common?
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Allegheny Front The Allegheny Front is the major southeast- or east-facing escarpment in the Allegheny Mountains in southern Pennsylvania, western Maryland, and eastern West Virginia, USA. The Allegheny Front forms the boundary between the Ridge-and-Valley Appalachians to its east and the Appalachian Plateau (locally called the Allegheny Plateau) to its west. The Front is closely associated with the Appalachian Mountains' Eastern Continental Divide, which in this area divides the waters of the Ohio/Mississippi river system, flowing to the Gulf of Mexico, from rivers flowing into Chesapeake Bay and from there into the Atlantic Ocean.
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Appalachian Plateau The Appalachian Plateau is a series of rugged, high plains located on the western side of the Appalachian Highlands. The Appalachian Highlands are a mountain range that run down the entire east coast of the United States.
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Pottsville Formation The Pennsylvanian Pottsville Formation is a mapped bedrock unit in Pennsylvania, western Maryland, West Virginia, and Ohio. The formation is also recognized in Alabama. It is a major ridge-former in the Ridge-and-Valley Appalachians of the eastern United States. The Pottsville Formation is conspicuous at many sites along the Allegheny Front, the eastern escarpment of the Allegheny or Appalachian Plateau.
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Allegheny Mountain (Pennsylvania) Allegheny Mountain is a stratigraphic ridge that extends northeast to southwest from south of Blue Knob (Pennsylvania) to a saddle point at the Savage Mountain anticline. It merges with Negro Mountain just north of the Cambria County line where the Berlin-Salisbury basin expires .
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Social and economic stratification in Appalachia The Appalachian region of the Eastern United States is home to over 25 million people and covers parts of mostly mountainous areas of 13 states, including Mississippi, Alabama, Pennsylvania, New York, Georgia, South Carolina, North Carolina, Tennessee, Virginia, Kentucky, Ohio, Maryland, and the entire state of West Virginia. The near-isolation of the area's rugged topography is home to communities with a distinct culture, who in many cases are put at a disadvantage because of the transportation and infrastructure problems that have developed.
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Central Appalachian dry oak-pine forest The Central Appalachian dry oak-pine forest is a forest system found from Maine south through New Hampshire, Vermont, Massachusetts, Rhode Island, Connecticut, New York, New Jersey, Pennsylvania, Maryland, to West Virginia and Virginia. It is abundant in the low- and mid-elevation central Appalachian Mountains and in the central Piedmont.
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Ouachita geosyncline The Ouachita geosyncline was a major structural or sedimentary basin along southern North America. It is mostly covered by sedimentary rocks from the late Paleozoic and Mesozoic, but rocks of the former basin outcrop in the Llano Uplift near the Austin region, spanning Oklahoma and Arkansas, where it forms the Ouachita Mountains. The basin formed during the Paleozoic from the Ordovician through the Mississippian. The basin was involved in the Ouachita orogeny during the Pennsylvanian.
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Casselman Formation The Casselman Formation mapped sedimentary bedrock unit in Pennsylvania, Maryland, and West Virginia, of Pennsylvanian age. It is the uppermost of two formations in the Conemaugh Group, the lower being the Glenshaw Formation. The boundary between these two units is the top of the marine Ames Limestone. The Conemaugh Group overlies the Upper Freeport coal bed of the Allegheny Formation and underlies the Pittsburgh coal seam of the Monongahela Group.
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Shenandoah Valley The Shenandoah Valley is a geographic valley and cultural region of western Virginia and the Eastern Panhandle of West Virginia in the United States. The valley is bounded to the east by the Blue Ridge Mountains, to the west by the eastern front of the Ridge-and-Valley Appalachians (excluding Massanutten Mountain), to the north by the Potomac River and to the south by the James River. The cultural region covers a larger area that includes all of the valley plus the Virginia highlands to the west, and the Roanoke Valley to the south. It is physiographically located within the Ridge and Valley province and is a portion of the Great Appalachian Valley.
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Pine Knob (Pennsylvania) Pine Knob is a peak in the Allegheny Mountains of Pennsylvania. This mountain is a satellite peak of its larger neighbor Blue Knob. At 2704 ft above sea level it is the lesser in elevation when compared to Schaefer Head (2,950 ft), Round Knob (2,791 ft), Cattle Knob (2,842 ft) and Ritchey Knob (2,865 ft). The latter mountain is connected to Pine Knob, the saddle elevation between the peaks is 2597 ft
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Appalachian bogs Appalachian bogs are boreal or hemiboreal ecosystems, which occur in many places in the Appalachian Mountains, particularly the Allegheny and Blue Ridge subranges. Though popularly called bogs, many of them are technically fens.
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Allegheny River Lock and Dam No. 4 The Allegheny River Lock and Dam No. 4 in Harrison Township, Allegheny County, Pennsylvania, is a lock that was built 1920-1927, and opened in 1927, 24.2 miles upstream from the mouth of the river in Pittsburgh. The lock and dam were built by the U.S. Army Corps of Engineers as a part of an extensive system of locks and dams to improve navigation along the Allegheny River. It has a single lock and a fixed crest dam, keeping the river depth at least 9 feet in the pool above the dam. The amount of water that flows over the dam is not controlled locally, so it does not provide flood control, but it does help provide water to municipalities.
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Front Range The Front Range is a mountain range of the Southern Rocky Mountains of North America located in the central portion of the U.S. State of Colorado, and southeastern portion of the U.S. State of Wyoming. It is the first mountain range encountered moving west along the 40th parallel north across the Great Plains of North America. The Front Range runs north-south between Casper, Wyoming and Pueblo, Colorado and rises nearly 10,000 feet above the Great Plains. Longs Peak, Mount Evans, and Pikes Peak are its most prominent peaks, visible from the Interstate 25 corridor. The area is a popular destination for mountain biking, hiking, climbing, and camping during the warmer months and for skiing and snowboarding during winter. Millions of years ago the present-day Front Range was home to ancient mountain ranges, deserts, beaches, and even oceans.
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Bear Pond Mountains The Bear Pond Mountains are a sub-range in the Appalachian Mountains, that straddle Pennsylvania and Maryland in the United States. These mountains are a part of the Ridge and Valley Appalachians and reach their highest point at Cross Mountain (Pennsylvania) 2062 ft . A unique geologic feature known as the "Punchbowl" occurs in this range. This feature was created by the weathered shales of the Ordovician age in the center of a south-plunging anticline, having been eroded to expose a large amphitheater like feature (punchbowl). Cross and Hearthstone Mountain are made of hard resistant quartzite of the Tuscarora Formation of the Silurian age, which form the walls of the bowl.
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Elleber Ridge Elleber Ridge is the name of a ridge in the Allegheny Mountains of West Virginia and it is also the name of the mountain's summit, Elleber Knob (4,595 ft). It is located in the eastern portion of Pocahontas County near the Virginia state line. The ridge and summit are located entirely in the Monongahela National Forest. Rattlesnake Trail runs from the base of the mountain to Elleber Knob. The summit is also accessible via Elleber Sods Road, which is maintained by the National Forest.
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Appalachian Stakes The Appalachian Stakes is an American Grade III Thoroughbred horse race run annually in April at Keeneland Racecourse in Lexington, Kentucky. Open to three-year-old fillies, it is contested on turf over a distance of one mile (8 furlongs).
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External massif An external massif is, in the geology of the Alps, a place where crystalline rocks of the European plate crop out. Such massifs are found north and west of the Penninic zone (the crystalline "core" of the Alps) as tectonic windows in the Helvetic Zone. They differ from the crystalline nappes in that they were originally part of the European plate, while the Penninic nappes were part of the crust below various domains in the Tethys Ocean.
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Andean Volcanic Belt The Andean Volcanic Belt is a major volcanic belt along the Andean cordillera in Argentina, Bolivia, Chile, Colombia, Ecuador and Peru. It formed as a result of subduction of the Nazca Plate and Antarctic Plate underneath the South American Plate. The belt is subdivided into four main volcanic zones that are separated from each other by volcanic gaps. The volcanoes of the belt are diverse in terms of activity style, products and morphology. While some differences can be explained by which volcanic zone a volcano belongs to, there are significant differences within volcanic zones and even between neighboring volcanoes. Despite being a type location for calc-alkalic and subduction volcanism, the Andean Volcanic Belt has a large range of volcano-tectonic settings, such as rift systems and extensional zones, transpressional faults, subduction of mid-ocean ridges and seamount chains apart from a large range on crustal thicknesses and magma ascent paths, and different amount of crustal assimilations.
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Allegheny Land Trust Allegheny Land Trust is a regional land conservation group headquartered in the Pittsburgh suburb of Sewickley, Pennsylvania in the United States.
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Appalachian Ohio Appalachian Ohio is a bioregion and political unit in the southeastern part of the U.S. state of Ohio, characterized by the western foothills of the Appalachian Mountains and Appalachian Plateau. The Appalachian Regional Commission defines the region as consisting of thirty-two counties. This region roughly overlaps with the Appalachian mixed-mesophytic forests, which begin in southeast Ohio and southwest Pennsylvania and continue to north Georgia and Alabama. The mixed-mesophytic forest is found only in Central and Southern Appalachia and eastern/central China. It is one of the most biodiverse temperate forests in the world.
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Blake Plateau The Blake Plateau lies in the western Atlantic Ocean off the southeastern United States coasts of North Carolina, South Carolina, Georgia and Florida. The Blake Plateau lies between the North American continental shelf and the deep ocean basin extending about 145 kilometers (90 miles) east and west by 170 kilometers (106 miles) north and south, with a depth of about 500 meters (1,640 feet) inshore sloping to about 1,000 meters (3,281 feet) about 375 kilometers (233 miles) off shore, where the Blake Escarpment drops steeply to the deep basin. The Blake Plateau, associated Blake Ridge and Blake Basin are named for the U.S. Coast and Geodetic Survey steamer George S. Blake, in service 1874-1905, that first used steel cable for oceanographic operations and pioneered deep ocean and Gulf Stream exploration. Survey lines of the steamer "Blake" first defined the plateau that now bears the ship's name.
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Kittatinny Mountain Kittatinny Mountain (Lenape: Kitahtëne) is a long ridge traversing across northwestern New Jersey running in a northeast-southwest axis, a continuation across the Delaware Water Gap of Pennsylvania's Blue Mountain Ridge (also known as Kittatinny Ridge). It is the first major ridge in the far northeastern extension of the Ridge and Valley province of the Appalachian Mountains, and reaches its highest elevation (the state's highest), 1,803 feet, at High Point in Montague Township. Kittatinny Mountain forms the eastern side of Wallpack Valley; the western side comprises the Wallpack Ridge (highest elevation: 928 ft above sea level.