In some calcium carbonate-bearing sandstones from the edge of the continental shelf off the northeast United States, the δC13 range is from -30 and -60 per mil for both aragonite and high-magnesium calcite. The δC13 of co-existing shells of Modiolus sp. is normal (+ 1.7 to -2.7 per mil). The δO18 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.
Methane-derived marine carbonates of pleistocene age
Science
By: J.C. Hathaway and E.T. Degens
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Abstract
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Methane-derived marine carbonates of pleistocene age |
| Series title | Science |
| DOI | 10.1126/science.165.3894.690 |
| Volume | 165 |
| Issue | 3894 |
| Year Published | 1969 |
| Language | English |
| Publisher | AAAS |
| Description | 3 p. |
| First page | 690 |
| Last page | 692 |