The Allegheny Plateau ( /ˌælɨˈɡeɪni/) is a large dissected plateau area in western and central New York, northern and western Pennsylvania, northern and western West Virginia, and eastern Ohio. It is divided into the unglaciated Allegheny Plateau and the glaciated Allegheny Plateau.
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 through Maryland and into eastern West Virginia.
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.
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 1,500 feet (270 to 460 m). By the Allegheny Front, however, elevations may reach well over 4,000 feet (1,200 m), with relief of up to 2,000 feet (610 m).
One of the more notable geologic areas within the Allegheny Plateau is the Hocking Hills region of southeast Ohio.
Read more about Allegheny Plateau: Geology and Physiography
Other articles related to "allegheny plateau, plateau, allegheny":
... Wild Area lies at an elevation of 1,896 feet (578 m) on the Allegheny Plateau ... provinces, with all but the northernmost part in the Pittsburgh Low Plateau, known for its coal and mineral deposits, and characterized by steep-cut stream beds ... The Allegheny Plateau formed in the Alleghenian orogeny some 300 million years ago, when the part of Gondwana that became Africa collided with the landmass that became North America, forming Pangaea ...
... limestone, and shale mountain region, with the source in the dissected Allegheny Plateau and the mouth in the Ridge-and-valley Appalachians ... the west bank of Larrys Creek itself is Harris Point, where it leaves the dissected Allegheny Plateau ... east bank of the Second Fork is Clapp Point, which marks the boundary of the dissected plateau and is southwest of Harris Point ...
... The park is at an elevation of 1,919 feet (585 m) atop the Allegheny Plateau, just west of the Allegheny Front, a steep escarpment which rises 1,300 feet (400 m) in 4 ... The Allegheny Plateau and Appalachian mountains were all formed in the Alleghenian orogeny some 300 million years ago, when Gondwana (specifically what became Africa ... The Allegheny Plateau has a continental climate, with occasional severe low temperatures in winter and average daily temperature ranges of 20 °F (11 °C) in winter and 26 °F (14 °C) in summer ...
... The Glaciated Allegheny Plateau is that portion of the Allegheny Plateau that lies within the area covered by the last glaciation ... As a result, this area of the Allegheny Plateau has lower relief and more gentle slopes than the relatively rugged Unglaciated Allegheny Plateau ... Ohio lying between the glacial till plains and the Unglaciated Allegheny Plateau ...
... The Allegheny Plateau is a physiographic section of the larger Appalachian Plateau province, which in turn is part of the larger Appalachian physiographic division ...
Famous quotes containing the word allegheny:
“Wachusett hides its lingering voice
Within its rocky heart,
And Allegheny graves its tone
Throughout his lofty chart.
Monadnock, on his forehead hoar,
Doth seal the sacred trust,
Your mountains build their monument,
Though ye destroy their dust.”
—Lydia Huntley Sigourney (17911865)