Paleogeographic conditions of sedimentation in the Rodionov interglacial period in the upper reaches of the Seyda River (according to palynological and diatom methods)

We present results of study of Middle Pleistocene intermorainic deposits by palynological and diatom methods. Intermorainic deposits are assigned to the Rodionov interglacial period. Two climatic optima have been identified: pollen Pinus sylvestris dominates in the lower optimum, and pollen Picea sp., Pinus sylvestris dominates in the upper one. The deposits were generally formed in a shallow freshwater reservoir.