Abstract: Chromato-mass-spectrometric studies made it possible to identify a wide spectrum of hydrocarbon biomarkers in crude oils from Cenomanian pools of northern West Siberia (Russkoe, Pangodinskoe, Van-Eganskoe, Severo-Komsomol’skoe). The distribution pattern of the main hydrocarbon components (n-alkanes, acyclic isoprenanes, steranes, terpanes) shows that most of the oils underwent intense microbial oxidation. We have established high concentrations of 25-norhopanes typical of high-degree degradation; demethylated hopanes are also revealed in “alkane” crude oils. Among low-molecular chemofossils, bi- and tricyclic mono and sesquiterpanes have been recognized, whose precursors are usually biomolecules synthesized by plants. Unsaturated precursors of mono and sesquiterpanes might have been the starting material for thermocatalytical synthesis of framework adamantanoid structures, whose high concentrations have been found in alkane-free crude oils.

Cite: Kashirtsev V.A. , Nesterov I.I. , Melenevskii V.N. , Fursenko E.A. , Kazakov M.O. , Lavrenov A.V.
Biomarkers and Adamantanes in Crude Oils from Cenomanian Deposits of Northern West Siberia
Russian Geology and Geophysics. 2013. V.54. N8. P.958-965. DOI: 10.1016/j.rgg.2013.07.012 WOS Scopus РИНЦ OpenAlex

Dates:

Submitted:	Feb 12, 2013
Accepted:	Apr 10, 2013
Published print:	Jul 31, 2013

Identifiers:

Web of science:	WOS:000324663400012
Scopus:	2-s2.0-84883019814
Elibrary:	20451791
OpenAlex:	W2060738388

Citing:

DB	Citing
Web of science	6
Scopus	13
OpenAlex	16

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