Characteristic of marine Oligocene diatom flora from the Cenozoic key section of West Kamchatka

Abstract

The results on study of fossil diatom flora from marine Cenozoic key section of West Kamchatka at the Kvachina Bay are given. Based on distinctions in taxonomic composition and stratigraphic occurrence of biochronologically important taxa in the section, diatom assemblages of different age dated from the early Oligocene to earliest Miocene are identified. In their entirety and paleontological characteristics studied Oligocene assemblages are the most representative among all assemblages of this age known from Kamchatka region.