Передкарпатський прогин

The report is devoted to an actual problem of studying the deep structure of the Carpathian region. Our research is based on creating a spatial integral seismic-gravity model. Gained results gave the opportunity to single out a number of lowered and raised blocks of the basement which correlate with the main tectonic units of the region and specify its geological structure. Further studying of the territory requires conduction of regional seismic investigation and its integral interpretation.

Seismogeodynamic conditions, complicating the operation of chinks on an example of Dolyna and Oryv-Ulychnyansk oil-gas deposits are considered. Intensive technology of production of oil on Dolyna deposit in 1974-1976 has provoked a series of appreciable earthquakes with intensity of 5-6 degree (MSK-64 scale).

The analysis of the known geological-geophysical data without controversy witness bankruptcy of revision of the established notions about the Pre-Carpathian Foredeep tectonic realisation and Alpine development, which was undertaken by a group of geologists from Lviv. The concept of absence of any genetic connection between the Carpathians and the molasse depression on the platform foundation (the external zone at the Carpathians' front) lacks any factual and theoretic basis.

The features of consedimental tectonic of the Precarpathian foredeep (central Paratethys) are considered. Sedimentation processes of the Stebnik’s suite took place in calm conditions as indicated by a number of attributes. As an example of the important diagnostic signs of tectonic activity the nature of the faulting and processes of consedimentary and modern mineralization were studied.