Relative depth reconstruction method using marine ostracods: A case-study from the upper Barremian–Aptian of the Crimean Mountains

Abstract

A method of reconstruction of outer sublittoral relative depth using ostracods has been suggested. The new method is based on an increasing percentage of ostracods with distinct eye tubercle with water depth rising. The proposed method was developed and checked on late Barremian–Aptian ostracods of the Crimea; the results are similar to those obtained from oxygen isotope analysis and principal component analyses. The combined curve of the depth changing in the Crimean sea during late Barremian–Aptian aligns with the global eustatic curve.