New monoaromatic steroids in organic matter of the apocatagenesis zone

V. A. Kashirtsev, A. N. Fomin, N. P. Shevchenko, K. V. Dolzhenko

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

According to the materials of geochemical study in the core of the ultradeep hole SV-27 of aromatic fractions of bitumoids of the Vilyui syneclise (East Siberia) by the method of chromatography–mass spectrometry, starting from the depth of >5000 m, four diastereomers of previously unknown hydrocarbons, which become predominant in the fraction at a depth of ∼6500 m, were distinguished. Similar hydrocarbons were found in organic matter of Upper Paleozoic rocks of the Kharaulakh anticlinorium in the Verkhoyansk folded area. According to the intense molecular ion m/z 366 and the character of the basic fragmental ions (m/z 238, 309, and 323), the major structure of the compounds studied was determined as 17-desmethyl-23-methylmonoaromatic steroid C27. The absence of such steroids in oil of the Vilyui syneclise shows that deep micro-oils did not participate in the formation of oil fringes of gas condensate deposits of the region.

Original languageEnglish
Pages (from-to)815-818
Number of pages4
JournalDoklady Earth Sciences
Volume469
Issue number2
DOIs
Publication statusPublished - 1 Aug 2016
Externally publishedYes

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