A Climatostratigraphy of Pleistocene Deposits in the East Chamber of Denisova Cave
A Climatostratigraphy of Pleistocene Deposits in the East Chamber of Denisova Cave
doi:10.17746/1563-0110.2026.54.1.003-015
N.S. Bolikhovskaya1 and M.V. Shunkov2 1Lomonosov Moscow State University, Vorobyevy Gory, Moscow, 119992, Russia 2Institute of Archaeology and Ethnography, Siberian Branch, Russian Academy of Sciences, Pr. Akademika Lavrentieva 17, Novosibirsk, 630090, Russia
We present a detailed climatostratigraphic subdivision of Pleistocene deposits in the East Chamber of Denisova Cave, northwestern Altai. On the basis of the taphonomic and morphological analysis of pollen from those deposits, over 140 taxa of higher plants were identified. A comparative analysis of modern tree and shrub vegetation in the Upper Anuy valley and that reconstructed from remains in the East Chamber reveals a much greater diversity of Pleistocene formations. Environmental changes around Denisova Cave over the past 300 thousand years are assessed. Boundaries and paleogeographic characteristics of certain stages are specified, climatic and phytocenotic successions of warm and cold intervals are revealed, and specific features of periglacial flora and vegetation are described. On the basis of changes in the qualitative and quantitative composition of pollen spectra from lithological units 17.1-9, 32 zones are described, including three groups with spectra typical of relatively warm periods such as the Tobol, Shirta, and Kazantsevo interglacials of Western Siberia. The pollen zone relating to the Karga interstadial includes five spectra of an interstadial type and one also typical of interglacials, with the predominance of oak, lime, ash, alder, and hazel. Four groups of pollen zones, represented by periglacial spectra, indicate cold stages, specifically the Samara, Taz, Yermakovo, and Sartan.
