- underwater volcanicity
- подводный вулканизм
English-Russian mining dictionary. В.П. Манышев.
English-Russian mining dictionary. В.П. Манышев.
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