ИСТИНА

The results of a comprehensive study of the Turonian-Coniacian deposits of the North-West Caucasus, represented by a rhythmically built terrigenous-carbonate stratum, are presented. The study area is located in the valley of the Abin River and belongs to the folded-allochthonous Novorossiysk-Lazarevskaya Zone of the Greater Caucasus. The purpose of this work is to reconstruct the climate and sedimentation conditions in the North-West Caucasus in the Turonian- Coniacian time on the basis of detailed bio- and chemostratigraphic studies. The use of petrographic, lithological, X-ray phase, isotopic and micropaleontological analyzes made it possible to reveal important changes in abiotic and biotic events during this interval.