Pushkar V.S., Laukhin S.A., Cherepanova M.V., Tarasova E.V.
Bulletin of the North-East scientific center 2017; (2): 13-19
New data have been obtained, which permitted a more reasonable validation of the age of the Zhuravlinoye and Okanaanskoye glaciations in the north of the Chukchi Peninsula. It has been established that the Zhuravlinaya moraine was deposited in coastal-marine conditions and corresponds to the second half of the Neodenticula koizumii zone, Neodenticula kamtschatica. At that time, the climate in the Vankarem depression was close to modern, but more humid. This promoted the glaciation development. The Zhuravliny glacier most probably came down to the lowland in the interval of 3.2-3.1 Ma. The Okanaanskaya moraine may have reached the lowland during the regression of 2.25-2.20 Ma. In the mountains, the glaciation began somewhat earlier, yet later than the first valley glaciation in Alaska.
