Mineralized biota from the neoproterozoic Uluntui Formation

First finds of microfossils from the silicified microphytolitic carbonates of the Uluntui Formation in the southwestern Baikal region are described. They are represented by remains of the cyanobacterial community that formed microphytolites. These microfossils are accompanied by acritarchs probably...

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Bibliographic Details
Published in:Lithology and Mineral Resources 2012, Vol.47 (1), p.89-97
Main Authors: Stanevich, A. M., Mazukabzov, A. M., Kornilova, T. A., Maksimova, E. N.
Format: Article
Language:English
Subjects:
Algae
Aquatic plants
Biota
Carbonate rocks
Carbonates
Earth and Environmental Science
Earth Sciences
Fossils
Geological time
Mineral Resources
Mineralization
Mineralogy
Sedimentology
Silurian
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Summary:First finds of microfossils from the silicified microphytolitic carbonates of the Uluntui Formation in the southwestern Baikal region are described. They are represented by remains of the cyanobacterial community that formed microphytolites. These microfossils are accompanied by acritarchs probably belonging to green algae. The silicified microfossils are sufficiently well preserved despite complete and repeated recrystallization of host primary carbonate rocks. Main phases of secondary mineralization are related to hydrothermal-metasomatic processes, which were likely provoked by collisional events on the southern flank of the Siberian Craton in the Silurian.
ISSN:0024-4902
1608-3229
1573-8892
DOI:10.1134/S0024490212010063