Comment [on 'Are Proterozoic cap carbonates and isotopic excursions a record of gas hydrate destabilization following Earth’s coldest intervals?, Kennedy et al., Geology 29(5), 442-446]
Geology
By: M.D. Max and William P. Dillon
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Abstract
We welcome the evidence noted by Kennedy et al. (2001) for strong methane excursions associated with the cessation of glacial episodes. They identify the carbon in cap carbonates overlying glacial sediments as probably being of biogenic origin and as likely having had a biogenic methane source. These authors suggest that the methane was released from gas hydrate, which we agree is likely. However, we suggest a different mechanism for that release, rather than their suggested warming event. We propose that a dominantly pressure-related mechanism would be more plausible for releasing sufficient methane from the huge gas hydrate reservoir to modify the global greenhouse and drive global warming in a geological instant.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Comment [on 'Are Proterozoic cap carbonates and isotopic excursions a record of gas hydrate destabilization following Earth’s coldest intervals?, Kennedy et al., Geology 29(5), 442-446] |
| Series title | Geology |
| DOI | 10.1130/0091-7613(2002)030<0762:>2.0.CO;2 |
| Volume | 30 |
| Issue | 8 |
| Year Published | 2002 |
| Language | English |
| Publisher | Geological Society of America |
| Contributing office(s) | Woods Hole Coastal and Marine Science Center |
| Description | 2 p. |
| First page | 762 |
| Last page | 763 |
| Public Comments | Comment on the following article: "Martin J. Kennedy, Nicholas Christie-Blick, Linda E. Sohl; Are Proterozoic cap carbonates and isotopic excursions a record of gas hydrate destabilization following Earth's coldest intervals?. Geology ; 29 (5): 443–446; 10.1130/0091-7613(2001)029<0443:APCCAI>2.0.CO;2 |
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