Extrusive rock Extrusive rock Extrusive rock refers to the mode of igneous volcanic rock formation in which hot magma from inside the Earth flows out (extrudes) onto the surface as lava or explodes violently into the atmosphere to fall back as pyroclastics or tuff.This is as opposed to intrusive rock formation, in which magma does not reach the surface. The main effect of extrusion is that the magma can cool much more quickly in the open air or under seawater, and there is little time for the growth of crystals. Sometimes, a residual portion of the matrix fails to crystallize at all,
The Floor Is Made of Lava and D-A-D. The Floor Is Made of Lava The Floor Is Made Of Lava is a Danish rock band, formed in 2006. The band consists of Tobias Kippenberger (vocals), Simon Visti (bass), Lars Rock (guitar) and Ace (drums). In 2007 they had their debut, with the album "All Juice No Fruit", which was produced by Troels Abrahamsen of Veto. In 2010 they released their second album "Howl at the Moon", which was produced by Sebastion Wolff of Kellermensch. The band have primarily played concerts in Denmark. They've performed at Roskilde Festival, and have warmed up for bands such as Oasis,