Volcanic rock volcanic rock they are selling. The sub-family of rocks that form from volcanic lava are called igneous volcanic rocks (to differentiate them from igneous rocks that form from magma below the surface, called igneous plutonic rocks). The lavas of different volcanoes, when cooled and hardened, differ much in their appearance and composition. If a rhyolite lava-stream cools quickly, it can quickly freeze into a black glassy substance called obsidian. When filled with bubbles of gas, the same lava may form the spongy appearing pumice. Allowed to cool slowly, it forms a light-colored, uniformly solid rock called rhyolite. The lavas, having
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,