Zagadnienie fałdów wgłębnych w Karpatach

Piotr Karnkowski



Problems of deep-seated folds of Borysław – Dolina type in the Carpathians were discussed by many famous polish - T. Tołwiński, S. Wdowiarz, S. Jucha, Z. Rolewicz and russian - S.S. Kruglow, W.W. Głuszko - geologists. New data from geophysical investigations and deep wells as: Cisowa IG-l, Brzegi Dolne IG-l, Paszowa-l, Kuźmina-l, which have penetrated deeply flysh deposits of the Skolsk unit but often reached the Miocene rocks and consolidated Proterozoic basement, did not fix explicitly the stike direction of the Boryslaw – Pokuck unit in Poland. Some opinions suggest that oil-bearing deep-seated elements could continue between Cisowa and Kuźmina or near Jasień on Ustrzyki Dolne area. Other assumptions discuss their occurrence eastward from the Cisowa - Rybotycze elevation. Mentioned wells, particularly superdeep wells: Paszowa-l (7200 m depth) and Kuźmina-l (7541 m), have documented that the Spaskie sandstones of Lower Cretaceous age could be regarded as perspective series of deep-seated folds. These Lower Cretaceous deposits were widely extended within the Skolsk unit and gas findings in Kuźmina-l well allowed to locate next research Kuźmina- 2 borehole in which this sandstone horizon would be studied more detaily. The Kuźmina-l well supplied a lot of data about stratigraphy, lithology, geochemistry and tectonic of the Carpathian flysh as well as of Miocene deposits and platform basement. These superdeep wells, well logs and other geophysical investigations were done by gas and oil researching companies in Jasło and geophysical one in Krakow. The scientific studies were directed by the Oil-Gas Mining Institute in Kraków with cooperation of the Jagellonian University and the Academy of Mining and Metallurgy.

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