Abstract: The Govi basin group in central Mongolia arc, Mongolia is a continental depositional area where the continental oil fields were discovered earlier than other parts of the world. The basin group has the same geological features as the Erlian Basin in China. The present paper deals, coupled with seismic data and well logs, with the tectonic, stratigraphic and sedimentological aspects, and oil-gas potential of the Govi basin group, especially the (East Gobi) Dornogovi basin in Mongolia.