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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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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DOI: https://doi.org/10.1038/284613a0
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