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
Adam (given name) spelled Addams). In other languages there are similar surnames derived from Adam, such as Adamo, Adamov, Adamowicz, Adamski etc. In Arabic, Adam (آدم) means "made from the earth/mud/clay". Adam (given name) Adam is a common masculine given name. The personal name "Adam" derives from the Hebrew noun "ha adamah" meaning "the ground" or "earth". Its Quranic and Biblical usage has ensured that it is also a common name in all countries which draw on these traditions. It is particularly common in Christian and Muslim majority countries. In most languages its spelling is the same, although the pronunciation varies somewhat. Adán