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Kupsch, Walter Oscar Geology√
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Map of Great Lakes region - distribution of end moraines after Wisconsin stage of Pleistocene

Map of Great Lakes region showing the general distribution of end moraines formed after the Wisconsin stage of the Pleistocene. The moraines are shown in heavy black lines. The shaded area was never covered by the Pleistocene ice sheet. The area between the Wisconsin drift boundary and pre-Wisconsin Pleistocene deposits (Zumberge, 1958, p. 348).

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