Microbial factor in the formation of sedimentary continental systems of the Proterozoic (Mukun Basin, Lower Riphean of the Anabar Uplift of Siberia)

Microbially induced sedimentary structures of quartz arenites of the Early Meso-Proterozoic (Lower Riphean, 1.58 Ga) Mukun Basin of the Anabar Uplift of the Siberian Platform are considered. The effect of microbial mats and biofilms on the formation of fluvial landscapes and architecture of the sedimentary basin is shown. It is concluded that continental sedimentary–microbial systems influence the distribution of sandy deposits between continent and shelf in large transgressive sequences of Proterozoic deposits.