A NEW STRAIGHT-CHAIN HYDROCARBON BIOMARKER ASSOCIATED WITH ANAEROBIC METHANE CYCLING
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dc.contributor.author | Thiel V. | |
dc.contributor.author | Schmale O. | |
dc.contributor.author | Michaelis W. | |
dc.contributor.author | Peckmann J. | |
dc.contributor.author | Reitner J. | |
dc.date.accessioned | 2021-03-04T07:00:00Z | |
dc.date.available | 2021-03-04T07:00:00Z | |
dc.date.issued | 2001 | |
dc.identifier | https://elibrary.ru/item.asp?id=13773594 | |
dc.identifier.citation | Organic Geochemistry, 2001, 32, 8, 1019-1023 | |
dc.identifier.issn | 0146-6380 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/26239 | |
dc.description.abstract | 13C-depleted E and Z n-tricos-10-enes are prominent biomarkers in an anaerobic microbial mat at Black Sea methane seeps. These n-alkenes co-occur with archaeal irregular C25 isoprenoid hydrocarbons, namely 2,6,10,15,19-pentamethylicosane (PMI) and -enes (PMIΔ). Low δ13C-values (−73 and −77‰) for n-tricosenes and PMI imply the anabolism of methane carbon by their source biota. The n-tricosenes apparently originate from microorganisms closely associated with, if not identical to isoprenoid-producing, methane-metabolizing Archaea. Methane-seep deposits of Tertiary to Jurassic ages showed the absence of n-tricosenes, but 13C-depleted n-tricosane (δ13C as low as −87‰), a plausible diagenetic product, was observed in enhanced concentrations in 7 out of 9 samples studied. It is proposed that a preference of n-tricosane over the enveloping n-alkanes may provide a specific hydrocarbon fingerprint for the anaerobic cycling of methane in ancient settings. | |
dc.subject | Jurassic | en |
dc.title | A NEW STRAIGHT-CHAIN HYDROCARBON BIOMARKER ASSOCIATED WITH ANAEROBIC METHANE CYCLING | |
dc.type | Статья | |
dc.subject.age | Mesozoic::Jurassic | en |
dc.subject.age | Мезозой::Юрская | ru |
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