Abstract
Comprehensive study of diatoms from some Neogene stratotype sections of southern Primorye (Sineutesovskaya and Novokachalinskaya formations, Shufansky horizon) using light and scanning electron microscopy methods allowed adjustments to be made to the Zonal Diatom Scale of the Neogene in Primorye. Studies have shown the absence of some zone index species in the sediments: Alveolophora bifaria, A. jouseana, A. areolata. As a result, the corresponding subdivisions of the Scale received new names: Alveolophora hachiyaensis-Aulacoseira elliptica zone, Alveolophora khankaica zone, Alveolophora khursevichiae zone. The position of the Shufansky horizon zones has changed: the Aulacoseira praeislandica zone now corresponds to the Early Pliocene, and the Alveolophora tscheremissinovae zone to the Upper Pliocene. According to the International Stratigraphic Chart of the Cenozoic, the age of the upper boundary of the Alveolophora tscheremissinovae zone was revised to 2.58 Ma ago.
Published Version
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