Organic matter in Silurian rocks from the Chernov uplift

This study presents data on the composition of organic matter from the Late Silurian sediments of the Chernov uplift. These sediments are characterized by low C org contents, which may reach 1–3% in individual layers. A relatively high thermal maturity of organic matter is confirmed by polycyclic bi...

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Bibliographic Details
Published in:Geochemistry international 2012-07, Vol.50 (7), p.611-618
Main Authors: Bushnev, D. A., Burdelnaya, N. S.
Format: Article
Language:English
Subjects:
Earth and Environmental Science
Earth Sciences
Geochemistry
Geological time
Indexing in process
Kerogen
Organic chemicals
Organic matter
Pyrolysis
Rocks
Silurian
Stratigraphy
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Summary:This study presents data on the composition of organic matter from the Late Silurian sediments of the Chernov uplift. These sediments are characterized by low C org contents, which may reach 1–3% in individual layers. A relatively high thermal maturity of organic matter is confirmed by polycyclic biomarker distributions and Rock-Eval pyrolyisis data. Despite its higher thermal maturity level ( T max = 456°C), kerogen in carbonaceous shales from the Padymeityvis River exhibits good preservation of long-chain n -alkyl structures, which are readily identified in the 13 C NMR spectra and by the molecular analysis of the kerogen pyrolysis products.
ISSN:0016-7029
1556-1968
DOI:10.1134/S0016702912050023