V. A. Chetverova

Palinostratigraphy of the Triassic deposits in the Barents Sea Shelf (based on the Murmansk gas field wells)

Abstract. The paper outlines the Triassic deposits palynostratigraphic data from Murmansk gas field well sections 24, 28, 26, 27 in the southwestern South Barents Depression. The palynological data verify the Triassic deposit stratigraphic breakdown and identify palynological zones. There are novel layers of Polycingulatisporites spp. and Aratrisporites spp. — Punctatisporites fungosus, as well as five palynological zones comparable to the Norwegian part of the Barents Sea Shelf: Verrucosisporites spp. — Baculatisporites verus, Aratrisporitess spp. — Apiculatisporis spiniger, Leschikisporis aduncus — Echinitosporites iliacoides, Leschikisporis aduncus — Gibeosporites lativerrucosus, and Dictyophillidites spp. — Zebrasporites interscriptus. The author describes index species of palynozones, redefines several miospore species. The spores and pollen method to explore the Triassic deposits on the Barents Sea Shelf well sections contributes to the detailed stratigraphic breakdown of the regional Triassic deposits.

Keywords: рollen, spores, biostratigraphy, Triassic, Barents Sea region