Geological features of Pechora-Kolvinsky aulacogen and Bolshezemelsky arch junction zone in the Pechora Sea waters: the results of geophysical data integrated analysis

Relevance of the study is related to the necessity of development of geological model of Timan-Pechora basin aquatic part for hydrocarbon potential prediction. Main results of complex analysis of seismic, gravity and magnetic data within the aquatic parts of Pechora-Kolva aulacogen and Bolshezemelsky arch junction zone. Geophysical data include 3D survey within the western part of the Pechora Sea. In addition to these data regional seismic 2D lines were used. Complex data analysis allows to expand the spectrum of physical properties characterizing objects, evaluate their shape, size, depth of basement and sedimentary rocks and get an overview of lithological composition of rocks. It gives an opportunity to reduce uncertainties of hydrocarbon system elements. The complex analysis let to identify areas of intensive and gentle deformations within the basement of the aquatic part of Bolshezemelsky arch. Three types of erosional remnants are connected to areas of gentle deformations. Following the data of seismogravimagnetic modelling, objects associated with magmatic bodies were located within the basement. As the result of research conclusions about the effectiveness of geophysical data combination during the studying of the Pechora Sea geological features were made