Micropaleontological study of the Boreal transgression sediment sequence from Ushchemenskii section on the Zimnii coast of the White Sea

The basal part of Ushchemenskii section from the Zimnii coast of the White Sea represents marine clayey sediments of the Boreal transgression of Mikulinian (Late Pleistocene) age. For the first time, benthic foraminifers, ostracods and aquatic palynomorphs are reported for this area. Data on microfauna and aquatic palynomorphs were used for paleoecological analysis to reconstruct a coastal marine basin with sea-ice cover, water depths of > 50 m, high sedimentation rates and possible inflow of warm water masses from the North Atlantic.