Elision systems of the Dnieper-Donets aulacogen: Communication 1. Geological structure of the aulacogen and catagenetic processes in the Ciscaucasus and greater Donbas

The geological structure of the Dnieper-Donets aulacogen is characterized. It includes two elision systems, which are compared with the previously investigated system of the Ciscaucasus region (hereafter, Ciscaucasia). Particular attention is paid to the elision system of the Donets basin, development of which is related to the accumulation of peat and the coalification of Carbonaceous sequences. It is emphasized that this process should be considered an important geological factor responsible for folding.