The problem of diamond content of the Pomyanennovskaya suite (South Cis-Tyman, Perm Region)

Abstract

The polymictic composition of the rocks of the Pomyanennovskaya suite indicates their difference from the quartz rocks of the Upper Ordovician in the South Cis-Tyman, which is the basis of the method of relative «lithochronology» for the «mute» sections of the Early Paleozoic in the region. According to the lithological criterion, the rocks of the Pomyanennovskaya suite can be correctly distinguished from the composition of the Polyudovskaya suite (O3pl) into a local stratigraphic taxon, possibly comparable in age to the Alkesvozhskaya sequence (Є3–O1) of the Northern Urals. The diamond content of the Pomyanennovskaya suite indicates the possibility of the existence of intermediate Precambrian reservoirs in the Urals. Key words: Perm Region, Cambrian, Ordovician, diamond.