Geology of the Rocky Mountains Japan, Indonesia and the Aleutians; others are fragments of oceanic crust obducted onto the continental margin while others represent small isolated mid-oceanic islands. Magma generated above the subducting slab rose into the North American continental crust about inland. Great arc-shaped volcanic mountain ranges, known as the Sierran Arc, grew as lava and ash spewed out of dozens of individual volcanoes. Beneath the surface, great masses of molten rock were injected and hardened in place. For 270 million years, the effects of plate collisions were focused very near the edge of the North American plate boundary, far to the west of
Journey to the Centre of the Earth (album) with a one-off magazine published by "Classic Rock" and a replica of the 1974 Royal Festival Hall concert program and 132-page booklet. Credits adapted from the album's 1974 liner notes. Musicians Production Citations Sources Journey to the Centre of the Earth (album) Journey to the Centre of the Earth is the third album by English keyboardist Rick Wakeman, released on 3 May 1974 by A&M Records. It is a live recording of the second of his two concerts at the Royal Festival Hall on 18 January 1974, the premiere of his 40-minute orchestral rock piece based on Jules Verne's science