STRUCTURE AND THE LITHOLOGICAL COMPOSITION OF THE SECTION OF THE DEPOSITS OF KOLA BAY (FIORD) ACCORDING TO THE DATA OF DRILLING WELLS AND SEISMOACOUSTICS AND THE NEOTECTONIC CONDITIONS OF ITS FORMATION

By results of studying of materials of drilling of engineering-geological wells and seismoacoustic data the structure of a sedimentary cover of the Kola fiord on its the total thickness is for the first time lighted. The characteristic of structure and lithological composition of a section of deposits, the main forms of a relief of the underlying crystalline substrat is provided. Situations of formation of deposits and graben structure of the gulf are considered. It is noted that the deglyatsiation has served as the trigger mechanism which has started processes of the differentiated block uplift, development of fracture and a fault formation which has caused initial “exogenous” phases of neotectonic destruction of crust. The horizontal movements which have leding to the stretching of earths crust and separation of blocks with a graben formation in Kola Bay according to the authors with the influence of stress fields coming from developing young oceanic spreading basins.

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