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 gentler 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 and the Unglaciated Allegheny Plateau. The Glaciated Allegheny Plateau extends into a belt of southern
New York State and the central
Susquehanna River basin.
A small area of the Allegheny Plateau was glaciated during the
Wisconsin Stage, the late
Illinoian Stage, and Pre-Illinoian B and G glaciations of the
Pre-Illinoian Stage.[1] 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.
Major cities on the Glaciated Allegheny Plateau are
Akron and
Youngstown.
References
^Richmond, G.M. and D.S. Fullerton, 1986, Summation of Quaternary glaciations in the United States of America, Quaternary Science Reviews. vol. 5, pp. 183-196.
External links
Fleeger, G., nd,
Glacial geology of Pennsylvania Bureau of Topographic and Geologic Survey, Pennsylvania Department of Conservation and Natural Resources, Harrisburg, Pennsylvania.
Shepps, V.C., G.W. White, J.B. Droste, and R.F. Sitler, 1959,
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.)