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Science 15 August 1969:
Vol. 165. no. 3894, pp. 690 - 692
DOI: 10.1126/science.165.3894.690
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Articles

Methane-Derived Marine Carbonates of Pleistocene Age

John C. Hathaway 1 and Egon T. Degens 2

1 U.S. Geological Survey, Woods Hole, Massachusetts 02543
2 Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543

In some calcium carbonate-bearing sandstones from the edge of the continental shelf off the northeast United States, the dgrC13 range is from -30 and -60 per mil for both aragonite and high-magnesium calcite. The dgrC13 of co-existing shells of Modiolus sp. is normal (+ 1.7 to -2.7 per mil). The dgrO18 values of around + 3.5 per mil in all samples suggest deposition at temperatures around 0°C. Quaternary methane oxidized either chemically or microbiologically to carbon dioxide is the probable source of carbon in these carbonates.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Cretaceous Cold-Seep Communities and Methane-Derived Carbonates in the Canadian Arctic.
B. Beauchamp, B. BEAUCHAMP, J. C. HARRISON, W. W. NASSICHUK, H. R. KROUSE, and L. S. ELIUK (1989)
Science 244, 53-56
   Abstract »    PDF »
Coastal upwelling and a history of organic-rich mudstone deposition off Peru.
E. Suess, L. D. Kulm, and J. S. Killingley (1987)
Geological Society, London, Special Publications 26, 181-197
   Abstract »    PDF »


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Science. ISSN 0036-8075 (print), 1095-9203 (online)