- underwater volcanicity
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подводный вулканизм
English-Russian dictionary of geology. 2011.
English-Russian dictionary of geology. 2011.
Ordovician Period — Interval of geologic time, 490–443 million years ago, the second oldest period of the Paleozoic Era. It follows the Cambrian and precedes the Silurian. During the Ordovician, many of the landmasses were aligned in the tropics. Life was dominated… … Universalium