ISOTOPIC STAGE 23 OF THE PALYNOLOGICAL RECORD OF THE ELGYGYTGYN LAKE, POLAR CHUKOTKA

This paper examines for the first time the palynological characteristics from Elgygytgyn Lake sediments that were deposited during marine oxygen isotope stage 23 (MIS23). This stage, spanning the Piacenzian stage of the Pliocene and the Quaternary, previously had been a missing link in the lake's palynological record. The reconstruction of MIS23 phytocenoses closes the missing interval. This section of the Elgygytgyn Lake core represents the continuous record of the response of plant communities in Polar Chukotka to climate change during the Late Pliocene and Quaternary.

Keywords: oxygen isotope stage, lake sediments, Elgygytgyn Lake, Polar Chukotka, pollen zone, forest-tundra