EXTENDED 3β-ALKYL STERANES AND 3-ALKYL TRIAROMATIC STEROIDS IN CRUDE OILS AND ROCK EXTRACTS
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dc.contributor.author | Dahl J. | |
dc.contributor.author | Moldowan J.M. | |
dc.contributor.author | Summons R.E. | |
dc.contributor.author | McCaffrey M.A. | |
dc.contributor.author | Lipton P. | |
dc.contributor.author | Watt D.S. | |
dc.contributor.author | Hope J.M. | |
dc.date.accessioned | 2020-11-26T05:24:48Z | |
dc.date.available | 2020-11-26T05:24:48Z | |
dc.date.issued | 1995 | |
dc.identifier | https://elibrary.ru/item.asp?id=661609 | |
dc.identifier.citation | Geochimica et Cosmochimica Acta, 1995, , 18, 3717-3729 | |
dc.identifier.issn | 0016-7037 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/19588 | |
dc.description.abstract | In oils and Precambrian- to Miocene-age source rocks from varying depositional environments, we have conclusively identified several novel 3-alkyl sterane and triaromatic steroid series, including (1) 3β-n-pentyl steranes, (2) 3β-isopentyl steranes, (3) 3β-n-hexyl steranes, (4) 3β-n-heptyl steranes, (5) 3,4-dimethyl steranes, (6) 3β-butyl,4-methyl steranes, (7) triaromatic 3-n-pentyl steroids, and (8) triaromatic 3-isopentyl steroids. We have also tentatively identified additional homologs with 3-alkyl substituents as large as C11. The relative abundances of these compounds vary substantially between samples, as indicated by (1) the ratio of 3β-n-pentyl steranes to 3β-isopentyl steranes and (2) the ratio of 3-n-pentyl triaromatic steroids to 3-isopentyl triaromatic steroids. These data suggest possible utility for these parameters as tools for oil-source rock correlations and reconstruction of depositional environments. Although no 3-alkyl steroid natural products are currently known, several lines of evidence suggest that 3β-alkyl steroids result from bacterial side-chain additions to diagenetic Δ2-sterenes. | |
dc.subject | Miocene | en |
dc.subject | Precambrian | en |
dc.title | EXTENDED 3β-ALKYL STERANES AND 3-ALKYL TRIAROMATIC STEROIDS IN CRUDE OILS AND ROCK EXTRACTS | |
dc.type | Статья | |
dc.subject.age | Кайнозой::Неоген::Миоцен | ru |
dc.subject.age | Cenozoic::Neogene::Miocene | en |
dc.subject.age | Precambrian | en |
dc.subject.age | Докембрий | ru |
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