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Unglaciated Allegheny Plateau
The Unglaciated Allegheny Plateau is located in an arc around southeastern Ohio, West Virginia, into western Pennsylvania and a small portion of southwestern New York State. This area is a dissected plateau, characterized by sandstone, shale, and many coal seams. This is the part of the Allegheny Plateau that lies outside the continental glaciation of the ice age. Geography One of the most spectacular and scenic areas in this region is located in southeast Ohio, and is known as the Hocking Hills region. This area, similar to but smaller than the Red River Gorge in the Cumberland Plateau in Kentucky, features cliffs, rock shelters and waterfalls. The largest city in the Unglaciated Allegheny Plateau is Pittsburgh, Pennsylvania. Rivers The Ohio River roughly bisects the Unglaciated Allegheny Plateau in generally a north-northeast to south-southwest direction. Other significant rivers in the plateau include the Muskingum River and Tuscarawas River in Ohio, the Youghiogheny Rive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rock Shelter
A rock shelter (also rockhouse, crepuscular cave, bluff shelter, or abri) is a shallow cave-like opening at the base of a bluff or cliff. In contrast to solutional caves (karst), which are often many miles long or wide, rock shelters are almost always modest in size and extent. Formation Rock shelters form because a Rock (geology), rock stratum such as sandstone that is resistant to erosion and weathering has formed a cliff or bluff, but a softer stratum, more subject to erosion and weathering, lies just below the resistant stratum, and thus undercuts the cliff. In arid areas, wind erosion (Aeolian erosion) can be an important factor in rockhouse formation. In most humid areas, the most important factor in rockhouse formation is frost weathering, frost spalling, where the softer, more porous rock underneath is pushed off, tiny pieces at a time, by frost expansion from water frozen in the pores. Erosion from moving water is seldom a significant factor. Many rock shelters are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plateaus Of The United States
In geology and physical geography, a plateau (; ; : plateaus or plateaux), also called a high plain or a tableland, is an area of a highland consisting of flat terrain that is raised sharply above the surrounding area on at least one side. Often one or more sides have deep hills or escarpments. Plateaus can be formed by a number of processes, including upwelling of volcanic magma, extrusion of lava, and erosion by water and glaciers. Plateaus are classified according to their surrounding environment as intermontane, piedmont, or continental. A few plateaus may have a small flat top while others have wider ones. Formation Plateaus can be formed by a number of processes, including upwelling of volcanic magma, extrusion of lava, plate tectonics movements, and erosion by water and glaciers. Volcanic Volcanic plateaus are produced by volcanic activity. They may be formed by upwelling of volcanic magma or extrusion of lava. The underlining mechanism in forming plateaus from up ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sugar Maple
''Acer saccharum'', the sugar maple, is a species of flowering plant in the soapberry and lychee family Sapindaceae. It is native to the hardwood forests of eastern Canada and the eastern United States. Sugar maple is best known for being the primary source of maple syrup and for its brightly colored fall foliage. It may also be called "rock maple," "sugar tree," "sweet maple," or, particularly in reference to the wood, "hard maple," " birds-eye maple," or "curly maple," the last two being specially figured lumber. Description ''Acer saccharum'' is a deciduous tree normally reaching heights of , and exceptionally up to . A 10-year-old tree is typically about tall. As with most trees, forest-grown sugar maples form a much taller trunk and narrower canopy than open-growth ones. The leaves are deciduous, up to long and wide, palmate, with five lobes and borne in opposite pairs. The basal lobes are relatively small, while the upper lobes are larger and deeply notched. In con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gauley River
The Gauley River is a river in the U.S. state of West Virginia. It merges with the New River to form the Kanawha River, a tributary of the Ohio River. The river features numerous recreational whitewater areas, including those in Gauley River National Recreation Area downstream of the Summersville Dam. Headwaters and course The Gauley rises in the Monongahela National Forest on Gauley Mountain in Pocahontas County as three streams, the North, Middle, and South Forks, each of which flows across the southern extremity of Randolph County; they converge in Webster County. The river then flows generally west-southwestwardly through Webster, Nicholas and Fayette counties, past the towns of Camden-on-Gauley and Summersville, to the town of Gauley Bridge, where it joins the New River to form the Kanawha River. Via the Kanawha and Ohio rivers, it is part of the Mississippi River watershed. Tributaries The Gauley's largest tributaries all flow into the main river from the east ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New River (Kanawha River)
The New River is a river which flows through the U.S. states of North Carolina, Virginia, and West Virginia before joining with the Gauley River to form the Kanawha River at the town of Gauley Bridge, West Virginia. Part of the Ohio River, Ohio River watershed, it is about long. The origins of the name are unclear. Possibilities include being a new river that was not on the Fry-Jefferson map of Virginia, an Indian name meaning "new waters", or the surname of an early settler. It was once called Wood's River for Colonel Abraham Wood, an English explorer from Virginia, who explored the river in the mid-17th century. Despite its name, the New River is one of the List of rivers by age, five oldest rivers in the world geologically. However, a claim that the river is the second oldest in the world is disputed by the West Virginia Geological and Economic Survey and the National Park Service. This low-level crossing of the Appalachians, many millions of years old, has long been a biog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kanawha River
The Kanawha River ( ) is a tributary of the Ohio River, approximately 97 mi (156 km) long, in the U.S. state of West Virginia. The largest inland waterway in West Virginia, its watershed has been a significant industrial region of the state since early in the 19th century. It is formed at the town of Gauley Bridge in northwestern Fayette County, approximately 35 mi (56 km) SE of Charleston, by the confluence of the New and Gauley rivers 2 mi upstream from Kanawha Falls. The waterfall is 24 ft high and has been a barrier to fish movement for more than 1 million years. The river flows generally northwest, in a winding course on the unglaciated Allegheny Plateau, through Fayette, Kanawha, Putnam, and Mason counties, past the cities of Charleston and St. Albans, and numerous smaller communities. It joins the Ohio at Point Pleasant. An environmental overview and summary of natural and human factors affecting water quality in the watershed wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monongahela River
The Monongahela River ( , ), sometimes referred to locally as the Mon (), is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed August 15, 2011 river on the Allegheny Plateau in north-central West Virginia and Southwestern Pennsylvania. The river flows from the confluence of its west and east forks in north-central West Virginia northeasterly into southwestern Pennsylvania, then northerly to Pittsburgh and its confluence with the Allegheny River to form the Ohio River. The river includes a series of locks and dams that makes it navigable. Etymology The Unami word ''Monongahela'' means "falling banks", in reference to the geological instability of the river's banks. Moravian missionary David Zeisberger (1721–1808) gave this account of the naming: "In the Indian tongue the name of this river was ''Mechmenawungihilla'' (alternatively spelled ''Menawngihella''), which signifies a high bank, which is ever washed o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allegheny River
The Allegheny River ( ; ; ) is a tributary of the Ohio River that is located in western Pennsylvania and New York (state), New York in the United States. It runs from its headwaters just below the middle of Pennsylvania's northern border, northwesterly into New York, then in a zigzag southwesterly across the border and through Western Pennsylvania to join the Monongahela River at the Forks of the Ohio at Point State Park in Downtown Pittsburgh, Pennsylvania. The Allegheny River is, by volume, the main headstream of both the Ohio and Mississippi Rivers. Historically, the Allegheny was considered to be the upper Ohio River by both Native Americans and European settlers. This shallow river has been made navigable upstream from Pittsburgh to East Brady, Pennsylvania, East Brady by a series of locks and dams that were constructed during the early 20th century. A 24-mile-long portion of the upper river in Warren County, Pennsylvania, Warren and McKean County, Pennsylvania, McKean c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Youghiogheny River
The Youghiogheny River ( ), or the Yough ( ) for short, is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed August 15, 2011 tributary of the Monongahela River in West Virginia, Maryland, and Pennsylvania. It drains an area on the west side of the Allegheny Mountains northward into Pennsylvania, providing a small watershed in extreme western Maryland into the tributaries of the Mississippi River. Youghiogheny is a Lenape word meaning "a stream flowing in a contrary direction". Variant names According to the Geographic Names Information System, it has also been known historically as: * Gawgawgamie, Ohio Gani River, Roonanetto, Yanghyanghgain, Yaughvaughani, Yauyougaine River, Yawyawganey, Yawyougaine River, Yeoyogani, Yochio Geni, Yoghioghenny River, Yogyogany River, Yohioganey, Yohogany, Youghiogeny River, Youghogania, Youghyaughye, Youghyoghgyina River, Yoxhio geni River, Yoxhiogany, Yoxhiogeny, Yoxyougaine River, Yu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuscarawas River
The Tuscarawas River is a principal tributary of the Muskingum River, 129.9 miles (209 km) long, in northeastern Ohio in the United States. Via the Muskingum and Ohio rivers, it is part of the watershed of the Mississippi River, draining an area of on glaciated and unglaciated portions of the Allegheny Plateau. Route The river rises southwest of Hartville in northern Stark County, and initially flows westward, through Uniontown into southern Summit County, where it passes through the Portage Lakes area south of Akron, and Barberton. From Barberton the Tuscarawas flows generally south through Stark and Tuscarawas counties; the communities of Clinton, Canal Fulton, Massillon, Navarre, Bolivar, Zoar, Dover, and New Philadelphia were developed along its banks. South of New Philadelphia, the river turns southwest and west, flowing past Tuscarawas, Gnadenhutten, Port Washington, and Newcomerstown, sites of former Lenape people villages at the time of the Am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muskingum River
The Muskingum River ( ; ) is a tributary of the Ohio River, approximately long, in southeastern Ohio in the United States. An important commercial route in the 19th century, it flows generally southward through the eastern hill country of Ohio. Via the Ohio, it is part of the Mississippi River drainage basin, watershed. The river is navigable for much of its length through a series of locks and dams. Course The Muskingum is formed at Coshocton, Ohio, Coshocton in east-central Ohio by the confluence of the Walhonding River, Walhonding and Tuscarawas River, Tuscarawas rivers. It flows in a meandering course southward past Conesville, Ohio, Conesville and Dresden, Ohio, Dresden to Zanesville, Ohio, Zanesville, and then southeastward past South Zanesville, Ohio, South Zanesville, Philo, Ohio, Philo, Gaysport, Ohio, Gaysport, Malta, Ohio, Malta, McConnelsville, Ohio, McConnelsville, Beverly, Ohio, Beverly, Lowell, Ohio, Lowell, Stockport, Ohio, Stockport and Devola, Ohio, Devola. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
