Lithologic-petrographic peculiarities and conditions of regional cyclite rock formation J<sub>15</sub>, uncovered by parametric bore of the 1<sup>st</sup> Western-Tymsk area
Lithologic-petrographic research has shown that formation of regional cyclite rock J,5, uncovered by parametric bore of the first Western-Tymsk area (Tomsk region) occurred during two alternate transgressive cycles, peculiarities of which are presented in the lithological composition of lower and upper zone cyclites. Inclusions of glauconite and chlorite, organic exuviae, various stratification, wash-out and redeposition traces of lower sediments indicates the formation of radiated stratum in shallow marine basin with active hydrodynamic conditions.