Okhotsk-Chukotka Volcanic Belt
Geological formation
The Okhotsk-Chukotka Volcanic Belt (OCVB) is a Cretaceous volcanic belt in the Russian Far East region of northeast Asia.
It is found in Chukotka Autonomous Okrug and Khabarovsk Krai of northeastern Russia.
Geology
The volcanic belt is one of the largest subduction-zone related volcanic provinces in the world, stretching some 3,200 kilometres (2,000 mi) and comprising about 2 million km3 of volcanic and plutonic material.
The volcanism within the volcanic belt was related to the subduction of the ancient Kula Plate, which moved in a northward direction about 55 million years ago.
References
- New 40Ar/39Ar ages of Cretaceous continental volcanics from central Chukotka: implications for initiation and duration of volcanism within northern part of the Okhotsk Chukotka Volcanic Belt (northeastern Eurasia), by V. O. Ispolatov, P. L. Tikhomirov, M. Heizler, and I. Yu. Cherepanova.
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