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Radiolaria as Paleoclimatic Indicators: Pleistocene Climatic Fluctuations in the Equatorial Pacific Ocean

Published online by Cambridge University Press:  20 January 2017

David A. Johnson  and
Andrew H. Knoll
David A. Johnson
Affiliation:
Woods Hole Oceanographic Institution, Woods Holes, Massachusetts 02543. USA
Andrew H. Knoll
Affiliation:
Department of Geological Sciences, Harvard University, Cambridge, Massachusetts 02138. USA
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Abstract

Late Pleistocene radiolarian assemblages were examined in two cores (V24-58 and RC11-209) from the eastern equatorial Pacific Ocean, using Nigrini's 1970 method of recurrent group analysis. The radiolarian “climatic index” curves obtained by this analysis were in close agreement with fluctuations in carbonate levels established previously for the same cores. This correspondence suggests that equatorial radiolarian assemblages changed significantly in response to Pleistocene climatic oscillations. The radiolarian “climatic indices” of the two cores showed close agreement with each other. Our data indicate that equatorial radiolarian assemblages may prove useful for regional correlations between cores, and for paleoclimatic interpretations.

Type
Original Articles
Information
Quaternary Research , Volume 4 , Issue 2 , June 1974 , pp. 206 - 216
Copyright
University of Washington

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