| Most typical of the volcanicity is the presence of ultrabasic lavas and the highly magnesian basic lavas known as komatiites. |
| There's strong evidence to suggest that the massive climate disruptions which appear to have caused the Permian-Triassic extinctions were driven by the outgassing of CO2 from the huge upsurge of volcanicity in Siberia. |
| The young bands taking part include Bad Friday, Happy Scorpion, Open Wounds, Volcanicity, Vengeance, Black Ivy and four un-named trios. |
| This formed over 4 billion years ago giving evidence of planetary accretion and volcanicity on the moon. |
| Palaeozoic volcanicity was conspicuous along active continental margins especially where there was subduction. |
| Intense local volcanicity has given rise to thermal springs and to changes in the level of the land, which have caused temple porticoes along the shore to be submerged beneath the sea. |
