Show eruption of Vol volcanoes canoe ascribed t to 0 the tides not all active volcanoes erupt as did mount blount etna recently like a boiled over pot many explode shooting dust dus t and ashes miles into the air the con character of etna Is ascribed by to the fact act that its lava is a relatively thin liquid which allows jand and gas bubbles to escape readily la in explosive volcanoes the lava Is thick it holds back and gas ens stubbornly causing immense pressure beneath and eventually because practically every active volcano in the world Is located not far from large bodies of water tile tho theory Is 11 advanced by dr william bowle bowie of 0 the united states coast and geodetic survey and others that the kneading action of the periodic tides 1146 twists tho the ca earth rth forcing up the the lava and causing volcanic dietly activity 1 ty |