 The formation of the tar sands of the early Permian Age in Russia is a unique example of polygenetic sand deposition. A combination of Aeolian processes and sea regression resulted in the formation of two distinct layers of sand and clay. The upper layer of sand was formed by wind erosion of the underlying clay, while the lower layer represents the former seabed. This provides a useful reference point for geologists studying the area. This article was authored by A.I. Malikiev and R.R. Kosanov.