ANALYSIS OF THE CONDITIONS FOR THE ANTIFLUID FORMATION OF FRASNIAN-FAMENIAN CAP ROCK ORGANOGENIC STRUCTURES IN THE SAMARA REGION

Abstract

Geological and geophysical criteria of organogenic (bioherm) structures and caprocks of organogenic (bioherm) type allocation are discussed in the article. Frasnian-Tournaisian deposits stratification is carried out basing on deep drilling data. In the article a correlation scheme set is given which crosses various zones (on-board, external, internal side and center) of Mukhanovo-Erokhovsky mountain bending. Section types and deposits thickness of Malevsky Age for each zone have been identified. Isopachous map of Malevskij deposits has been built based on drilling data. Localization of trajectory reliable cover zones limited to bioherm structures has been carried out on the basis of isopachous map and correlation scheme. Sediments development scheme of Malevskij Age has been built up. It characterize the degree of reliability of caprock relative to the
Mukhanovo-Erokhovsky mountain bending zone and organogenic structures.