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Science 11 April 1975:
Vol. 188. no. 4184, pp. 147 - 150
DOI: 10.1126/science.188.4184.147
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Articles

Laurentide Ice Sheet Meltwater Recorded in Gulf of Mexico Deep-Sea Cores

James P. Kennett 1 and N. J. Shackleton 2

1 Graduate School of Oceanography, University of Rhode Island, Kingston 02881
2 Sub-department of Quaternary Research, University of Cambridge, Cambridge, England

Oxygen isotopic measurements in three Late Quaternary deep-sea cores from the Gulf of Mexico record a major anomaly between about 15,000 and 12,000 years ago superimposed on a more characteristic oceanic oxygen isotopic curve. This resulted from major influx of isotopically light glacial meltwater via the Mississippi River from the disintegrating Late Wisconsin Laurentide Ice Sheet 2000 kilometers to the north.


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