The Paleogene section of the Il’pinskii Peninsula in northeastern Kamchatka is a reference section for the North Pacific rim. The marine sedimentary succession, 2500m-thick and ranging from the Paleocene to Oligocene, forms one of the northernmost Paleogene sections in the Pacific to yield Paleogene calcareous plankton. Several studies have been dedicated to the study of planktonic foraminifera and nannoplancton, allowing for biostratigraphic correlation with standard zones. Diatoms have been recently found in Lutetian strata, the first record of these Eocene siliceous remains in the northwestern Pacific rim.

Benyamovskii V.N. & Gladenkov Y.B. (1996). Climatic fluctuations and migrations of biota in the North Pacific in the Paleogene. Stratigraphy and Geological Correlation 5, 480–495.

Gladenkov A.Y. (2013). First finds of Eocene diatoms in the marine Paleogene reference section in the Il’pinskii Peninsula, Northeastern Kamchatka. Stratigraphy and Geological Correlation 21, 96–106.

Gladenkov A.Y. & Gladenkov Y.B. (2007). New Data on Paleontological Characteristic of the Oligocene in the Il’pinskii Peninsula, Northeastern Kamchatka. Stratigraphy and Geological Correlation 15, 231–235.