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UDC (550.84:552.578):551.72(571.5) GEOCHEMICAL STUDIES OF ORGANIC MATTER OF THE LOWER RIPHEAN UST-ILYINKA FORMATION, THE WESTERN PRIANABAR REGION (RIPHEAN ANGARA-KOTUI PALEOTROUGH)
O. S. Ponomareva, P. N. Sobolev
New data are given on the organic matter geochemistry of the Ust-Ilya Formation, the western slope of Anabar Anteclise, which is possibly the most ancient HC source rock unit within the sedimentary cover of the Siberian Platform. Geochemical description includes pyrolytic parameters of rocks, data on acyclic HCbiomarkers, isotope composition of the organic matter carbon.
Key words: Siberian Platform, Riphean troughs, organic matter concentrations, catagenetic transformations, isotope composition of organic carbon, distribution limits of deposits.
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