The Coast Ranges, too, are the result of plates moving together. Subduction of the Juan de Fuca plate beneath the North American plate produced the volcanoes in the Cascade Range, including Mount Shasta and Lassen Peak. Movements along these faults formed the Basin and Range mountains. East of the Sierras, the subduction of the oceanic plate produced stresses that caused faulting. Uplift and erosion eventually exposed these batholiths, which form the Sierra Nevada. Some of the magma crystallized beneath the surface to form large masses of igneous rock. Millions of years ago, the subduction of an oceanic plate beneath the North American plate formed large pools of magma. Interactions between tectonic plates built the mountains in California. But the mountains are not just beautiful they also provide a record of California’s geologic history. Geologic Processes Inside Earth California’s scenic mountains attract visitors from around the world. Wind, water, ice, and other agents of erosion at die surface carved other features of the landscape and maps. Some of the features of the California landscape formed as the result of tectonic processes that took place deep beneath the surface. Each of California‘s regions is defined by the major geology facts and features within that region.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |