Cretaceous, Paleocene, and Pleistocene Sediments from the Indian Ocean

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Science  21 Jun 1963:
Vol. 140, Issue 3573, pp. 1316-1317
DOI: 10.1126/science.140.3573.1316


Two deep-sea cores containing Cretaceous, Paleocene, and Pleistocene sediments from an oceanic rise approximately 500 miles southeast of Cape Town contained well-preserved fossil foraminiferal ooze made up of about 97 percent planktonic forms, including species of Guembelina and Hedbergella. High percentages of particles less than 53 µ in diameter in the Cretaceous and Paleocene sediments indicate a deep-water open-ocean depositional environment. These sediments are the oldest recovered so far from the Indian Ocean.