A characterization and the formation conditions of the Callovian-Upper Jurassic deposits in the Akhtsu zone (Krasnodar Krai)

Deposits in the Akhtsu zone have been characterized, with the Mzymta River valley as an example. A lithological-paleontological and geochemical characterization of Callovian-Tithonian deposits has been given. A paleogeographic model has been proposed for the Akhtsu reef, and a chronostratigraphic profile has been established for the Callovian-Albian sedimentary basin in the Easter Black Sea region.