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Science 31 December 1965:
Vol. 150. no. 3705, pp. 1822 - 1824
DOI: 10.1126/science.150.3705.1822
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Articles

Ice-Rafted Detritus as a Climatic Indicator in Antarctic Deep-Sea Cores

John R. Conolly 1 and Maurice Ewing 1

1 Lamont Geological Observatory, Columbia University, Palisades, New York

Ice-rafted detritus is readily identified in sediment cores raised from the deep ocean floor around Antarctica. A few cores have reached a depth below which no ice-rafted material is found. This depth is interpreted as indicating the establishment of earliest Pleistocene glaciation in the Southern Hemisphere. It is just below a depth where there is a change in assemblages of Radiolaria which Hays associates with the Pliocene-Pleistocene boundary. The presence of ice-rafted material throughout the upper zone in cores taken south of the Polar Front indicates continuity of glaciation in Antarctica. Further north, near 45°S in the Argentine Basin, zonation of the ice-rafted detritus can be used to delineate glacial stages of the Pleistocene.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Millennial-Scale Instability of the Antarctic Ice Sheet During the Last Glaciation.
S. L. Kanfoush, D. A. Hodell, C. D. Charles, T. P. Guilderson, P. G. Mortyn, and U. S. Ninnemann (2000)
Science 288, 1815-1819
   Abstract »    Full Text »    PDF »
Antarctic Glacial History from Analyses of Ice-Rafted Deposits in Marine Sediments: New Model and Initial Tests.
N. D. Watkins, N. D. Watkins, J. Keany, M. T. Ledbetter, and T.-C. Huang (1974)
Science 186, 533-536
   Abstract »    PDF »
Paleomagnetic Study of Antarctic Deep-Sea Cores.
N. D. Opdyke, N. D. Opdyke, B. Glass, J. D. Hays, and J. Foster (1966)
Science 154, 349-357
   Abstract »    PDF »
A Theory of Ice Ages III.
W. L. Donn, W. L. Donn, and M. Ewing (1966)
Science 152, 1706-1712
   PDF »


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