Some specific features of the deep structure and oil-and-gas potential of the junction zone of the Siberian platform and Baikal-Patom folding (Patom sector)
The conducted scientific researches resulted in considering some geological-geophysical arguments that indirectly support new ideas about the deep structure and unique predictive petroleum potential of the junction zone of the Siberian Platform and the Baikal-Patom folded area in its Patom sector. The foundation of Nepsko-Peleduysky arch is assumed to be of aulacogene nature. It is argued that Nepsko-Botuobinsky anticlise is jointed here with Baikal-Patom folded area in by means of a deep mantle break - a regional seam the position of which is inherited by the location of the Lena River bed. On this basis Nyuysko-Dzherbinsky depression isn't allocated, and Pre-Patom trough is obviously reduced and presented by many-kilometer terrigenous deposits mainly in the pre-frontal zone of the folded belt with further possible expansion of the south-eastern border of Nepsko-Botuobinsky anticlise to the east up to the left bank of the Lena River. Formal evidences of presence of super-basin structural elements in the territory under study are proved. Formation conditions and prospects of discovery of a large oil- and gas-bearing basin in sub-foundation deposits where the total generation potential of the Riphean deposits of paleo-rift system and Pre-Patom regional system is realized are estimated.