STRUCTURE-TECTONIC CHARACTERISTICS OF THE ALDAN-MAYA POTENTIAL PETROLEUM AREA BASED ON THE INTERPRETATION OF REGIONAL SEISMIC DATA
I.A. Gubin1, A.E. Kontorovich1, L.N. Konstantinova1, S.A. Moiseev1,2, A.M. Fomin1
1Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
2Novosibirsk State University, Novosibirsk, Russia
Keywords: Riphean, Vendian, Cambrian, reflector, time section, structure map, structural level, tectonic scheme, Aldan-Maya petroleum area
Abstract
The results of regional geological exploration over the past 18 years within the Aldan-Maya potential petroleum area were used as the basis for the refinement of the geological structure of the study area. The study considers the key structural features of the sedimentary cover of the Aldan-Maya region and major tectonic events that affected its structure. The generalization and interpretation of regional seismic survey data provided the basis for building a series of geoseismic sections and structure maps, which, in turn, were used in structural tectonic zoning of the study area. The map showing outcrops of Riphean formations and groups on the pre-Vendian erosion surface was complied. Tectonic schemes for three structural levels (upper Karelian-Lower Riphean, Middle-Upper Riphean and Vendian-Cambrian) confirmed their fundamental difference. In particular, the large Maya inclined swell was detected only in the topography of the Lower Riphean and is absent in the overlying structures of Middle Riphean-Vendian age, which are represented by weakly differentiated monoclines. The parameters of the major tectonic elements were determined.
|
