Carbon Isotope Composition and Concentration of Fe-Group Elements in the Sedimentary Organic Matter from Rocks of Different Ages


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The Fe/Co ratio (ppm) in the kerogen from different-aged clastic sediments (Early Proterozoic–Mesozoic) varies from 17 to 4100, and δ13C value varies from –14.8 to –32.6‰. The relationship between Fe/Co and δ13C is determined by the composition of microbial biota in paleobasins and superimposed metamorphic processes. The kerogen from the Vendian deposits of the East European Platform, containing a large amount of saprophytes and actinomycetes is characterized by the maximum Co concentration. The kerogen from deposits metamorphosed under amphibolite-facies conditions are characterized by the minimal δ13C and the maximum Fe/Co ratio values.

Sobre autores

S. Felitsyn

Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences

Autor responsável pela correspondência
Email: felitsynsergey@gmail.com
Rússia, St. Petersburg, 199034

N. Alfimova

Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences; Institute of Earth Sciences, St. Petersburg State University

Autor responsável pela correspondência
Email: n.alfimova@spbu.ru
Rússia, St. Petersburg, 199034; St. Petersburg, 199034


Declaração de direitos autorais © Pleiades Publishing, Ltd., 2019

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