Great arc-shaped volcanic mountain ranges, known as the Sierran Arc, grew as lava and ash spewed out of dozens of individual volcanoes.
Rocky Mountains | Geology | geology | Carpathian Mountains | Appalachian Mountains | Rocky | Blue Ridge Mountains | Catskill Mountains | Ural Mountains | Rocky Marciano | Snowy Mountains Scheme | San Gabriel Mountains | Black Mountains | The Rocky Horror Show | San Bernardino Mountains | Ore Mountains | Jura Mountains | Caucasus Mountains | The Rocky Horror Picture Show | Tatra Mountains | Rocky Mountain News | Great Smoky Mountains | Apennine Mountains | Black Mountains, Wales | Atlas Mountains | Adirondack Mountains | Vosges Mountains | Troodos Mountains | Taurus Mountains | Tangra Mountains |