Volcanic bomb most of the damage they cause is from impact, or subsequent fire damage. Bomb explosions are most often observed in "bread-crust" type bombs. Bombs are named according to their shape, which is determined by the fluidity of the magma from which they are formed. Volcanic bomb A volcanic bomb is a mass of molten rock (tephra) larger than 64 mm (2.5 inches) in diameter, formed when a volcano ejects viscous fragments of lava during an eruption. They cool into solid fragments before they reach the ground. Because volcanic bombs cool after they leave the volcano, they are extrusive igneous rocks.
Electric Magma Electric Magma Electric Magma is an instrumental heavy riff rock band from Toronto, Ontario, Canada. Electric Magma was formed between 2000-2001 by Tryg Smith, Tim Reesor and Tom Brouard. Influenced by the stoner rock movement from the mid 90's (Fu Manchu, Kyuss, Clutch, Corrosion of Conformity), Electric Magma is known for their improvised style of riff-based rock music. Electric Magma has released seven full-length albums. Smith and Reesor, the core songwriters, remain the sole founding members. All of Electric Magma's albums have been released by Around Ahead Music, the bands record label. Electric Magma's 2012 release: "Canadian Samurai II" was