THE BLOCK STRUCTURE AND THE PRESENCE OF OIL AND GAS IN THE SILJAN IMPACT CRATER
Yu.I. Pikovsky1, M.P. Glasko2, V. G. Kucherov3,4
1Lomonosov Moscow State University, Leninnskie Gory 1, Moscow, 119991, Russia
2Institute of Geography, Russian Academy of Sciences, Staromonetnyi per. 29, Moscow, 119017, Russia
3Gubkin Russian State University of Oil and Gas (National Research University), Leninskii pr. 65, Moscow, 119991, Russia
4KTH Royal Institute of Technology, SE-10044, Stockholm, Sweden
Keywords: Impact crater, morphostructural modeling, Earth’s crust blocks, hydrocarbon shows
Abstract
Morphostructural modeling of the block structure of part of the Scandinavian crystalline shield has shown that the ring structure of the Siljan Ring impact crater is located in the center of a morphostructural node, a ring structure with a diameter of 300 km, marking a large disjunctive knot. The crater area consists of a central block, which is a granite massif, and of a surrounding mobile morphostructural boundary forming a wide small-block ring depression zone, where oil and gas shows have been revealed. This zone is regarded as the most promising one for the search for migration channels and atypical shows of hydrocarbons.
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