| Abstract: | In some calcium carbonate-bearing sandstones from the edge of the continental shelf off the northeast United States, the ??C13 range is from -30 and -60 per mil for both aragonite and high-magnesium calcite. The ??C13 of co-existing shells of Modiolus sp. is normal (+1.7 to -2.7 per mil). The ??O18 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. |
| Genre: | Article |
| ProdID: | 70010497 |
| Citation Author: | Hathaway, J. C.; Degens, E. T. |
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| Citation End Page: | 692 |
| Citation Issue: | 3894 |
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| Citation Language: | English |
| Citation Larger Work Title: | Science |
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| Citation Number Of Pages: | 3 |
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| Citation Search Results Text: | Methane-derived marine carbonates of pleistocene age; 1969; Article; Journal; Science; Hathaway, J. C.; Degens, E. T. |
| Citation Start Page: | 690 |
| Citation Volume: | 165 |
| Citation Year: | 1969 |
| Type: | citation/reference |
| Text: | Methane-derived marine carbonates of pleistocene age; 1969; Article; Journal; Science; Hathaway, J. C.; Degens, E. T. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Wed, 1 Jan 1969 00:00 -0600 |
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