Suchergebnisse

The most prospective section intervals in the Bazhenov formation (Tutleimskoy) and Abalak formation are composed of interbedded siliceous and carbonate rocks. Based on the core analysis, genetic typing of carbonate rocks was performed to improve the quality of their prediction, the most promising of them for finding of oil-saturated reservoirs are identified.

Results of the complex research of the carbonate rhythmically bedded section of the cement factory quarry of the Sengeley town of the Ulyanovsk province are presented. Description of cyclically bedded silicious member of Lower Paleocene is presented. For rhythmic and cryptorhythmic Upper Cretaceous and also cyclic Lower Paleocene deposits conditions of it origin by use of a complex of methods including lithological, petrographic, petromagnetic, geochemical, chemical and paleoecological ones, are reconstructed for the first time. Dilution and eustatic cycles, caused by eccentricity cycles of the Earth`s orbit became an agent forming rhythmicity. The last are determined in the cryptorhythmic lanceolata member of the Lower Maastrichtian.

Composition and origin of Callovian–Oxfordian deposits of the Sudak Bay based upon generalizations of our own results and analysis of published and unpublished data were specified. A botanic feature for geological prospecting of Oxfordian limestones was used for the first time.