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
Beneath the Planet of the Apes Beneath the Planet of the Apes Beneath the Planet of the Apes is a 1970 American science fiction film directed by Ted Post and written by Paul Dehn. It is the second of five films in the original "Planet of the Apes" series produced by Arthur P. Jacobs. The film stars James Franciscus, Kim Hunter, Maurice Evans, and Linda Harrison, and features Charlton Heston in a supporting role. In this sequel, another spacecraft crashes on the planet ruled by apes, carrying astronaut Brent who searches for Taylor and discovers an underground city inhabited by mutated humans with psychic powers. "Beneath