Secondary calcification of the planktonic foraminifer Neogloboquadrina pachyderma as a climatic index

Oscillations in the ratio of two principal types of secondary calcification of the test surface in Neogloboquadrina pachyderma populations closely parallel paleoclimatic oscillations over the last 6 million years in a deep-sea core drilled in the temperate South Pacific. The nature of secondary calc...

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Bibliographic Details
Main Authors: Srinivasan, M. S., Kennett, J. P.
Format: Article in Journal/Newspaper
Language:unknown
Published: American Association for the Advancement of Science 1974
Subjects:
Online Access:http://repository.ias.ac.in/51157/
http://www.sciencemag.org/content/186/4164/630.short
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Summary:Oscillations in the ratio of two principal types of secondary calcification of the test surface in Neogloboquadrina pachyderma populations closely parallel paleoclimatic oscillations over the last 6 million years in a deep-sea core drilled in the temperate South Pacific. The nature of secondary calcification in fossil planktonic foraminifera represents a useful index in interpreting Cenozoic climates.