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Encyclopedia > Allegheny Plateau
Map of the Allegheny plateau. The gray line divides the glaciated (northern) and unglaciated (southern) sections of the plateau.
Map of the Allegheny plateau. The gray line divides the glaciated (northern) and unglaciated (southern) sections of the plateau.

The Allegheny Plateau is a large dissected plateau area in western and central New York, northern and western Pennsylvania, northern West Virginia, and eastern Ohio. It is divided into the unglaciated Allegheny Plateau and the glaciated Allegheny Plateau. Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ... Shaded relief map of Cumberland Plateau and Ridge and Valley Appalachians on the Virginia/West Virginia border A dissected plateau is an area that has been uplifted, then severely eroded so that the relief is sharp. ... “NY” redirects here. ... Capital Harrisburg Largest city Philadelphia Area  Ranked 33rd  - Total 46,055 sq mi (119,283 km²)  - Width 280 miles (455 km)  - Length 160 miles (255 km)  - % water 2. ... Official language(s) English Capital Charleston Largest city Charleston Area  Ranked 41st  - Total 24,244 sq mi (62,809 km²)  - Width 130 miles (210 km)  - Length 240 miles (385 km)  - % water 0. ... Official language(s) None Capital Columbus Largest city Columbus Largest metro area Cleveland Area  Ranked 34th  - Total 44,825 sq mi (116,096 km²)  - Width 220 miles (355 km)  - Length 220 miles (355 km)  - % water 8. ... The Unglaciated Allegheny Plateau is located in an arc around southeastern Ohio into western Pennsylvania and West Virginia. ... The Glaciated Allegheny Plateau is that portion of the Allegheny Plateau that lies within the area covered by the last glaciation. ...


The plateau extends southward into western West Virginia, eastern Kentucky and Tennessee, where it is instead called the Cumberland Plateau. Official language(s) English Capital Charleston Largest city Charleston Area  Ranked 41st  - Total 24,244 sq mi (62,809 km²)  - Width 130 miles (210 km)  - Length 240 miles (385 km)  - % water 0. ... Official language(s) English[1] Capital Frankfort Largest city Louisville Area  Ranked 37th  - Total 40,444 sq mi (104,749 km²)  - Width 140 miles (225 km)  - Length 379 miles (610 km)  - % water 1. ... Official language(s) English Capital Nashville Largest city Memphis Largest metro area Nashville Area  Ranked 36th  - Total 42,169 sq mi (109,247 km²)  - Width 120 miles (195 km)  - Length 440 miles (710 km)  - % water 2. ... The Cumberland Plateau includes much of eastern Kentucky and western West Virginia in the United States. ...


The plateau terminates in the east at the Allegheny Mountains, which are the highest ridges just west of the Allegheny Front. The front extends from central Pennsylvania into eastern West Virginia. The Allegheny Mountain Range (also spelled Alleghany and Allegany) -- informally, the Alleghenies -- is part of the Appalachian Mountain Range of the eastern United States. ... The Allegheny Front is an escarpment delineating the eastern edge of the Allegheny Mountains. ...


The plateau is bordered on the west by glacial till plains in the north, generally north of the Ohio River, and the Bluegrass region in the south, generally south of the Ohio River. View of Pittsburgh, the largest metropolitan area on the Ohio River, where the Allegheny River (left) and the Monongahela River (right) join at Point State Park to form the Ohio River Cincinnati, Ohio is a well known city along the Ohio River, historically known for its riverboats. ... Bluegrass and rock fence of local limestone in central Kentucky. ...

Major fault at the dividing line between the Allegheny Plateau and the true Appalachian Mountains in Williamsport, Pennsylvania

Elevations vary greatly. In the glaciated Allegheny Plateau, relief may only reach one hundred feet or less. In the unglaciated Allegheny Plateau in southeastern Ohio and westernmost West Virginia, relief is typically in the range of two hundred to four hundred feet. Absolute highest elevations in this area are often in the range of 900 to 1500 feet. By the Allegheny Front, however, elevations may reach well over 4000 feet, with relief of up to 2000 feet. Download high resolution version (2560x1920, 3973 KB)Dividing fault between Appalachian Mountains and Allegheny Plateau A major geologic fault (directly behind small trees) can be seen in a new roadcut about 10 miles north of Williamsport, Pennsylvania on new Route 15. ... Download high resolution version (2560x1920, 3973 KB)Dividing fault between Appalachian Mountains and Allegheny Plateau A major geologic fault (directly behind small trees) can be seen in a new roadcut about 10 miles north of Williamsport, Pennsylvania on new Route 15. ... Appalachians in North Carolina The Appalachian Mountains (French: les Appalaches) are a vast system of mountains in eastern North America. ... Map of Lycoming County, Pennsylvania highlighting Williamsport Williamsport is a city in and the county seat of Lycoming County,GR6 Pennsylvania in the United States. ...


One of the more notable geologic areas within the Allegheny Plateau is the Hocking Hills region of southeast Ohio. Hocking Hills Trail The Hocking Hills is a scenic area of Ohio, primarily in Hocking County, Ohio, that features cliffs, gorges, rock shelters, and waterfalls. ...

Canisteo River Valley from Pinnacle State Park. Glaciation in this area of the plateau removed the sharp relief that is seen in unglaciated areas of the plateau. The line of the distant peaks approximates the level of a peneplain that was uplifted to form the plateau.

Image File history File linksMetadata Download high-resolution version (2000x1333, 2122 KB) Summary Canisteo River Valley from Pinnacle State Park, Addison, NY Licensing File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Image File history File linksMetadata Download high-resolution version (2000x1333, 2122 KB) Summary Canisteo River Valley from Pinnacle State Park, Addison, NY Licensing File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Pinnacle State Park and Golf Course is located in Steuben County, New York in the USA. The park is southwest of Corning, New York in the Town of Addison, east of Village of Addison. ... The Wisconsin (in North America), Devensian (in the British Isles), Midlandian (in Ireland), Würm (in the Alps), and Weichsel (in northern central Europe) glaciations are the most recent glaciations of the Pleistocene epoch, which ended around 10,000 BCE. The general glacial advance began about 70,000 BCE, and... Canisteo River Valley from Pinnacle State Park The distant peaks at the same elevation represent the remnants of a peneplain that was uplifted to form the Allegheny Plateau, which is a dissected plateau in southwestern NY. In this area, the sharp relief that is seen on some of the Allegheny...

External links

  • Photographs of the Allegheny Plateau and the Allegheny River watershed region

  Results from FactBites:
 
Allegheny Plateau - definition of Allegheny Plateau in Encyclopedia (260 words)
The Allegheny Plateau is a large, dissected plateau area in southern New York, western Pennsylvania, West Virginia, and eastern Ohio.
The plateau terminates in the east at the Allegheny Mountains, which are the highest ridges just west of the Allegheny Front.
The plateau is bordered on the west by glacial till plains in the north, generally north of the Ohio River, and the Bluegrass region in the south, generally south of the Ohio River.
Glaciated Allegheny Plateau - Wikipedia, the free encyclopedia (196 words)
The Glaciated Allegheny Plateau is that portion of the Allegheny Plateau that lies within the area covered by the last glaciation.
In general, the glaciated lies to the north and west of the unglaciated, and forms an arc in northeastern to southeastern Ohio lying between the glacial till plains and the Unglaciated Allegheny Plateau.
The major cities on the Glaciated Allegheny Plateau are Akron and Youngstown.
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