Abstract
The Mukun Group represents a thick (>750 m) complex of terrigenous features sediments in the lower part of the Riphean sedimentary cover of the Anabar region was formed on the spacious cratonic block. The complex is remarkable for its pure quartzarenitic composition. The facies analysis with emphasis on the genetic interpretation of various sedimentary structures revealed three facies associations in its sedimentary succession: alluvial, eolian-fluvial, and fluvial-sabkha. It is shown that sedimentary material was transported into the terminal basin by a braided system of permanent rivers. Relationships between the eolian and fluvial components in the single sedimentation system of the Mukun paleobasin is considered in line with the proposed model, according to which alternation of long periods with the eolian and fluvial sedimentation was controlled by tectonics.
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