Summary of 230Th/U ages of the Mid-Late Pleistocene (MIS-3,-5,-7) organic-rich sequences in Russia and adjacent regionsVladislav Kuznetsov1, Fedor Maksimov1, Stanislav Laukhin2,31 - St. Petersburg State University, St. Petersburg, Russia, e-mail: v.kuznetsov@spbu.ru 2,3 - Earth Cryosphere Institute SD RAS Tyumen, Russia & Russian State University of Geological Prospecting, Moscow, Russia, e-mail: valvolgina@mail.ruGeochronology of the mid-late Pleistocene of the Russian Plain and Siberia are based mostly on paleobotanical studies, the 14C-dating of organic sediments and plant remains, the TL and OSL dating of sands and loams as well as the ESR dating of mollusk shells. However, the accumulated evidence did not conclusively resolve, for example, the problem of the status of the Karganian (Middle Würm) time in Siberia: is it an Interglacial or Interstadial time? The Mikulinian (Eemian) deposits on the Russian Plain are well distinguished by the pollen spectra but have yet to get a numerical age. The Midd