Coiling Direction of Globigerina pachyderma as a Climatic Index

An interdependence between the geographical distribution of dextral and sinistral populations of the planktonic foraminifer, Globigerina pachyderma , and sea surface-temperatures is demonstrated. It is inferred that changes in dominant coiling direction at lower levels in sediment cores from the Nor...

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Bibliographic Details
Published in:Science
Main Author: Ericson, David B.
Format: Article in Journal/Newspaper
Language:English
Published: American Association for the Advancement of Science (AAAS) 1959
Subjects:
Multidisciplinary
North Atlantic
Online Access:http://dx.doi.org/10.1126/science.130.3369.219
https://www.science.org/doi/pdf/10.1126/science.130.3369.219
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Summary:An interdependence between the geographical distribution of dextral and sinistral populations of the planktonic foraminifer, Globigerina pachyderma , and sea surface-temperatures is demonstrated. It is inferred that changes in dominant coiling direction at lower levels in sediment cores from the North Atlantic record southward shifts of isotherms during the last ice age.

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