New Data on the Age and Lithological Composition of the Liman Formation, Sakhalin Island

Data on diatom algae and silicoflagellates were obtained for the first time from the lower part of the stratotype of the Liman Formation (Liman Mount area), which allowed dating of this part of the Liman Formation as far back as the end of the Middle–beginning of the Late Miocene ( Denticulopsis praedimorpha Zone, 12.9–11.5 Ma and Thalassiosira yabei Zone, 11.5–10.0 Ma by diatoms) and revealed the marine genesis of host deposits. The upper part of the stratotype of the Liman Formation (Pyata Cape area) that hosts the continental deposits with an assemblage of freshwater diatoms, with a certain degree of confidence may be referred to the Late Miocene (?)–Eopleistocene (Calabrian Stage).