Geochemical evidence for widespread euxinia in the Later Cambrian ocean

Benjamin C. Gill (), Timothy W. Lyons, Seth A. Young, Lee R. Kump, Andrew H. Knoll and Matthew R. Saltzman
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Benjamin C. Gill: University of California, 900 University Avenue
Timothy W. Lyons: University of California, 900 University Avenue
Seth A. Young: Indiana University-Bloomington
Lee R. Kump: Penn State University, 503 Deike Building, University Park
Andrew H. Knoll: Harvard University
Matthew R. Saltzman: School of Earth Science, The Ohio State University, 275 Mendenhall Laboratory, 125 South Oval Mall

Nature, 2011, vol. 469, issue 7328, 80-83

Abstract: Oxygen shortage in the ancient oceans It has been suggested that the Cambrian ocean was oxygen deficient, but physical evidence for widespread anoxia has been lacking. Gill et al. present sulphur isotope data from Cambrian rocks at six different locations around the world and find a positive sulphur isotope excursion in phase with a large excursion in the marine carbon isotope record, which is thought to be indicative of a global carbon cycle perturbation at the time. A prolonged period of anoxia during the Cambrian may explain the previously enigmatic peculiarities seen in the fossil record.

Date: 2011
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DOI: 10.1038/nature09700

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