New homologous series of biomarker molecules from Vendian deposits of the Sayan-adjacent Biryusa area
V.A. Kashirtsev, Yu.K. Sovetov, E.A. Kostyreva, V.M. Melenevskii, A.Yu. Kuchkina
Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the RAS, 3 prosp. Akad. Koptyuga, Novosibirsk, 630090, Russia
Keywords: mudstones; hydrocarbons; 2,7-dimethyl alkanes; Vendian
Pages: 533-537
Abstract
We studied the organochemical distribution of saturated hydrocarbons in organic matter of mudstones of the Vendian Marna Formation in the Sayan-adjacent Biryusa area. The formation is composed of glacial, glacio-alluvial, and lacustrine deposits.
In the fraction of saturated hydrocarbons in chloroform extracts (bitumoids), a homologous series of earlier unknown 2,7-dimethyl alkanes has been identified, with molecules having the even number of carbon atoms prevailing. The possible sources of such abundant biomarkers are considered.
|
