Can anyone tell me how the Allegheny Plateau was formed?
See the source web site for great information and drawing: http://en.wikipedia.org/wiki/Catskill_Fo… The Devonian Catskill Formation (Dck) is the name given to a thick bedrock unit found in Pennsylvania and New York. It is at the top of the sedimentary rock sequence deposited in the Catskill Delta, known as the Catskill Clastic Wedge, which is a cyclical sequence of sandstones and shales thought to be deposited in a deltaic environment. [edit]Formation During the Devonian period, the Catskill Delta was formed by a series of river deltas and otherwise marshy terrain. This terrain was sandwiched between the epicontinental Kaskaskia Sea in central North America and the now-vanished Acadian Mountains. Erosion brought sediment from the mountain westwards into the sea, forming the deltas. Eventually the Delta formation was buried and transformed into sandstone, which was then revealed in places when the Catskill a
See the source web site for great information and drawing: http://en.wikipedia.org/wiki/Catskill_Fo… The Devonian Catskill Formation (Dck) is the name given to a thick bedrock unit found in Pennsylvania and New York. It is at the top of the sedimentary rock sequence deposited in the Catskill Delta, known as the Catskill Clastic Wedge, which is a cyclical sequence of sandstones and shales thought to be deposited in a deltaic environment. [edit]Formation During the Devonian period, the Catskill Delta was formed by a series of river deltas and otherwise marshy terrain. This terrain was sandwiched between the epicontinental Kaskaskia Sea in central North America and the now-vanished Acadian Mountains. Erosion brought sediment from the mountain westwards into the sea, forming the deltas. Eventually the Delta formation was buried and transformed into sandstone, which was then revealed in places when the Catskill and
