Igneous rock the partial melting of rocks within the mantle and crust. Extrusive igneous rocks cool and solidify quicker than intrusive igneous rocks. They are formed by the cooling of molten magma on the earth's surface. The magma, which is brought to the surface through fissures or volcanic eruptions, solidifies at a faster rate. Hence such rocks are smooth, crystalline and fine-grained. Basalt is a common extrusive igneous rock and forms lava flows, lava sheets and lava plateaus. Some kinds of basalt solidify to form long polygonal columns. The Giant's Causeway in Antrim, Northern Ireland is an example. The molten rock, with
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