Abstract:
The initial Early Riphean geodynamic environment of the Southern Urals and adjacent regions of the East European Platform was governed by the formation of a specific uplift of the Archean–Early Proterozoic crystalline basement with a rugged mountainous topography related to the ascent of an unconsolidated mantle diapir. Initiation and evolution of the Early Riphean rift was followed by the accumulation of coarse-clastic molassoid sediments mainly composed of fragments of granitic–gneissic rocks transported from walls of the rift and interior horsts of the Taratash Ridge type. The accumulation of coarse-clastic material in rifts was accompanied by volcanic activity on walls of the rift.
