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Pleistocene glaciation of ohio, U.S.A.

2004; Elsevier BV; Linguagem: Inglês

10.1016/s1571-0866(04)80200-8

2212-1161

John P. Szabo, Anindya Chanda,

Archaeology and Natural History

This chapter reviews that a relatively new map, the Quaternary Geology of Ohio, serves as a base map for the ArcView layers generated for Ohio. ArcView layers for Ohio include the inferred palaeodrainage that formed prior to the Pleistocene. This consists of a large northwesterly to westerly flowing fiver system referred to as the Teays River and several other northward flowing rivers into what is now the Erie basin. Another ArcView layer illustrates inferred drainage reversals caused by a pre-Saalian/pre-Illinoian ice advance. It discusses that moraine traces follow distal margins of these features, and ice margins are inferred in some localities where moraines are absent to present a possible continuous ice front. Calculations of ice volumes show that there was insufficient ice to support an Early or Middle Weichselian/Wisconsinan glaciation in Ohio. Moreover, ice did not advance into Ohio during the Younger Dryas Stadial. Additionally, the extents of four of the Late Weischselian/Wisconsinan proglacial ancestors of modem Lake Erie are also discussed in the chapter.