Pleistocene Climates in the Atlantic and Pacific Oceans: A Comparison Based on Deep-Sea Sediments

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Science  13 Mar 1970:
Vol. 167, Issue 3924, pp. 1483-1485
DOI: 10.1126/science.167.3924.1483


Comparison of Pleistocene climatic records defined by variations in abundance of planktonic Foraminifera in three cores from the southeastern Pacific with similar records in cores from the Atlantic suggests that times of warm surface water in this region of the Pacific were at least partly synchronous with times of cool water in the Altantic. This conclusion opposes the Milankovitch theory of the causation of ice ages, but it harmonizes with a modified form of Simpson's hypothesis.

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