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[[Image:Canisteo valley 1453.JPG|300px|right|thumb|Canisteo River Valley from [[Pinnacle State Park and Golf Course|Pinnacle State Park]]. [[Wisconsin glaciation|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.]]
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]]. 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 (Ohio)|glacial till plains]] and the Unglaciated Allegheny Plateau. The Glaciated Allegheny Plateau extends into a belt of southern [[New York| New York state]] and the central [[Susquehanna River]] basin.
A small area of the Allegheny Plateau was glaciated during the [[Last glacial period|Wisconsin Stage]], the late [[Illinoian (stage)|Illinoian Stage]], and Pre-Illinoian B and G glaciations of the [[Pre-Illinoian|Pre-Illinoian Stage]]. This area – only a few hundred square kilometers owing to the blockage the steep relief of the mountains provides at the edge of the [[ice sheet]] – contains only old drift now buried by long periods of [[soil]] development.
The major cities on the Glaciated Allegheny Plateau are [[Akron, Ohio|Akron]] and [[Youngstown, Ohio|Youngstown]].
Fleeger, G., nd, [http://www.dcnr.state.pa.us/topogeo/field/glacial.aspx ''Glacial geology of Pennsylvania''] Bureau of Topographic and Geologic Survey, Pennsylvania Department of Conservation and Natural Resources, Harrisburg, Pennsylvania.
Sevon, W.D., and D.D. Braun, 1997, [http://www.dcnr.state.pa.us/topogeo/maps/Map59.pdf ''Glacial Deposits of Pennsylvania.'' PDF version, 660 KB] Map no. 59. Pennsylvania Geological Survey, Harrisburg, Pennsylvania.
Sevon, W.D. G.M. Fleeger, and V.C. Shepps, 1999, [http://www.dcnr.state.pa.us/topogeo/education/es6/es6.pdf ''Pennsylvania and the Ice Age. PDF version, 3.9 MB''] Educational Series no. 6. Pennsylvania Geological Survey, Harrisburg, Pennsylvania.
Shepps, V.C., G.W. White, J.B. Droste, and R.F. Sitler, 1959, [http://www.dcnr.state.pa.us/topogeo/pub/generalgeology/G32/G32.aspx Glacial ''Geology of Northwestern Pennsylvania.''] Bulletin no. G32. Bureau of Topographic and Geologic Survey, Pennsylvania Department of Conservation and Natural Resources, Harrisburg, Pennsylvania. (Note: having been published in 1959, this reference uses the now obsolete and abandoned classic, Nebraskan, Kansan, and so forth, Midwest glacial terminology.)