Maastrichtian section Kyz-Kermen (Mountain Crimea): biostratigraphy, conditions of sedimentation

Abstract

This article presents the results of a comprehensive study of the Maastrichtian sequence of the Kyz-Kermen Mountain, located on the territory of the South-Western Crimea. The section is represented by a rhythmically bedded carbonate sequence, which is gradually replaced by carbonate sandstones.The study of rocks in thin sections made it possible to identify eight lithotypes, and chemical analyzes showed changes in the content of individual elements in the rock composition. Interpretation of data about planktonic and benthic foraminifers made it possible to determine the age of the deposits, define to zones and beds with fauna as well as to establish another supposed hiatus in the middle of this section, coinciding with a noticeable change in the composition of the rocks.Quantitative analysis of the association of foraminifers together with lithological and geochemical results made it possible to establish that the studied section was formed an open carbonate platform at depth of the middle–outer shelf.