Titlebook: Regional Stratigraphy of North America; William J. Frazier,David R. Schwimmer Book 1987 Plenum Press, New York 1987 Continental shelf.Delt

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Introduction,tratigraphy of North America. Our purpose is to develop a stratigraphic framework against which to view the history of the continent and with which to test ideas about Earth mechanics. No such treatment can ever be complete, as ours is not, but we hope the attempt will provide the reader with at lea

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The Archean,e Archean Earth was strikingly different from that of the present day. For example, the atmosphere contained no free oxygen and the biosphere consisted solely of the simplest bacteria and blue-green algae. Continents existed during the Archean, but they probably did not consist, as do modern contine

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