Abstract
The transitional zone from the Pacific Ocean to the Northeastern Asia continent provides a unique region to study the Cenozoic geological processes in the boreal climatic belt. This region belongs to the Asiatic convergent margin where thick sedimentary deposits occur. New Paleogene and Neogene stratigraphic schemes for the Kamchatka Peninsula and surrounding areas, including nearly 15 horizons, a number of zones and “beds with fauna”, form the basis for this summary of geological events. The paper deals mainly with molluscan faunas. Paleobiotic evolution on the continental shelf, as well as paleogeographic and paleoclimatic changes were studied and six major periods of warmth “climatic optima” were recognized. Many of these environmental changes reflect global climatic events. The stratigraphic scheme of the Kamchatka Peninsula is discussed with reference to that of North America.
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