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Anomalous AMS Radiocarbon Ages for Foraminifera from High-Deposition-Rate Ocean Sediments

Published online by Cambridge University Press:  18 July 2016

Wallace S Broecker ,
Susan Trumbore ,
Georges Bonani ,
Willy Wölfli  and
Millie Klas
Wallace S Broecker
Affiliation:
Lamont-Doherty Geological Observatory of Columbia University Palisades, New York 10965
Susan Trumbore
Affiliation:
Lamont-Doherty Geological Observatory of Columbia University Palisades, New York 10965 Institut fur Mittelenergiephysik, ETH Hönggerberg, 8093 Zürich, Switzerland
Georges Bonani
Affiliation:
Institut fur Mittelenergiephysik, ETH Hönggerberg, 8093 Zürich, Switzerland
Willy Wölfli
Affiliation:
Institut fur Mittelenergiephysik, ETH Hönggerberg, 8093 Zürich, Switzerland
Millie Klas
Affiliation:
Lamont-Doherty Geological Observatory of Columbia University Palisades, New York 10965
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Abstract

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Radiocarbon ages on handpicked foraminifera from deep-sea cores are revealing that areas of rapid sediment accumulation are in some cases subject to hiatuses, reworking and perhaps secondary calcite deposition. We present here an extreme example of the impacts of such disturbances. The message is that if precise chronologies or meaningful benthic planktic age differences are to be obtained, then it is essential to document the reliability of radiocarbon ages by making both comparisons between coexisting species of planktonic foraminifera and detailed down-core sequences of measurements.

Type
Research Article
Information
Radiocarbon , Volume 31 , Issue 2 , 1989 , pp. 157 - 162
Copyright
Copyright © The American Journal of Science 

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