Journal
PALEONTOLOGICAL JOURNAL
Volume 51, Issue 4, Pages 430-440Publisher
PLEIADES PUBLISHING INC
DOI: 10.1134/S0031030117040037
Keywords
Archean; Proterozoic; banded iron formations; iron quartzites; bacteria; cyanobacteria; prokaryotes; Karelia; Kola Peninsula
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Funding
- Program of the Presidium of the Russian Academy of Sciences Evolution of the organic world and planetary processes
- Russian Foundation for Basic Research [14-04-00260, 15-04-00774]
- research Program of St. Petersburg University [3.39.139.2014]
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Probable microfossils, presumably of bacterial origin, were found in the banded iron formations of Karelia and the Kola Peninsula. The age of these formations is 2.7-2.8 Ga. Based on the organic carbon content and balance estimations it was established that these banded iron formations were deposited in environments rich in organic matter. Comparative analysis of the morphology of Recent and Neoarchean microorganisms suggests a bacterial origin for some magnetite in the studied quartzites.
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