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The dolomite problem is very popular among geologists, who are especially working with oil-saturated carbonate rocks. Probably, this is the most common type of diagenetic transformation of limestone. However, the problem of secondary dolomitization is still insufficiently discussed, as a process associated with oil migration and oil-charge. The main purpose of this study is the geological reconstruction of diagenetic changes for the Tournaisian and Visean dolomites based on the application of data from cathodolumi...

The objects of research were carbonate-siliceous rocks of Semiluk and Mendym horizons of Upper Devonian formations from Volga-Ural region, Russian Federation. The main purpose of studying was a comprehensive investigations Devonian black shale and an assessment of their resource potential as objects of future exploitation for oil (unconventional shale oil formations). It was shown that the Upper Devonian black shales and their analogues have widespread on the territory of the eastern part of the Russian platform. ...