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Uppermost Miocene carbon isotope stratigraphy of a piston core in the equatorial Pacific

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Abstract

Carbon isotopic analyses of benthonic foraminifera from palaeomagnetically dated piston core RC12–66 (east equatorial Pacific Ocean) show a permanent decrease in δ13C of ∼ 0.5‰ in the upper reversed interval of palaeomagnetic Epoch 6 (about 6.3 Myr BP). Magnetostratigraphic and biostratigraphic correlations reported here suggest that this decrease is isochronous with a similar carbon shift observed at localities elsewhere in the Indo–Pacific region.

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Authors and Affiliations

  1. Graduate School of Oceanography, University of Rhode Island, Kingston, Rhode Island, 02881

    L. D. Keigwin Jr

  2. Godwin Laboratory, Freeschool Lane, Cambridge, UK

    N. J. Shackleton

Authors
  1. L. D. Keigwin Jr
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  2. N. J. Shackleton
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Keigwin, L., Shackleton, N. Uppermost Miocene carbon isotope stratigraphy of a piston core in the equatorial Pacific. Nature 284, 613–614 (1980). https://doi.org/10.1038/284613a0

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