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1973 Archival description results for 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).

Restoration of Pleistocene Wooly Mammoth and Mastodon

Restoration of a Pleistocene mastodon (above) and a Pleistocene Woolly mammoth (below). A tooth of each is shown with a hand for scale. The crowned tooth of the mastodon was suitable for diet of twigs, branches and cones, whereas the infolded structure of the mammoth tooth was more adapted to a grass diet (Zumberge 1958, p. 362).

Diagram of a fault cutting horizontal strata

Diagram of a fault cutting horizontal strata. A, the fracture before displacement; B, after displacement but before erosion; C, after erosion of fault scarp (Emmons, Thiel, Stauffer, Allison, 1955, p. 461).

Resultados 1936 a 1950 de 1973