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Russian Geology and Geophysics

2005 year, number 8

FLORA, VEGETATION, AND CLIMATE OF THE MIDDLE CENOPHYTIC (PALEOCENE-EOCENE) OF SIBERIA: PALYNOLOGICAL DATA

V.S. Volkova and O.B. Kuz'mina
Institute of Petroleum Geology, Siberian Branch of the RAS,
3 prosp. Akad. Koptyuga, Novosibirsk, 630090, Russia
Keywords: Palynology, Paleocene, Eocene, Oligocene, flora, vegetation, paleogeography, climate, Siberia
Pages: 822-833

Abstract

A host of palynological data on West Siberia obtained recently at the Institute of Petroleum Geology have been considered and generalized, with the literature data on central Siberia and northeastern Russia invoked. The main large stages of sedimentation, formation, and evolution of sea and lake basins, evolution of floras and climate on the territory of Siberia in the Cenozoic are recognized and described. The Paleocene and Eocene Siberian palynofloras are taxonomically described in detail. Quantitative characteristics (temperatures of January and July, precipitation) of the climatic conditions of the Middle (optimum) and Late Eocene of Siberia have been obtained by the method of climatograms. Floristic relationships of Paleogenic palynofloras of Siberia with those from other regions are considered, with emphasis placed on their role in estimating the effect of paleoclimate and zoning on the distribution of vegetation zones.