Environmental Engineering Reference
In-Depth Information
tain. This is the most common type of volcano. Examples include Mount Mazama in Oregon (a des-
troyed volcano that is now the location of Crater Lake), Paricutin in Mexico, Mount Shasta in California,
and Cerro Negro in Nicaragua.
Locations where magma emerges from within the Earth but not at plate boundaries are called
hot spots.
Hot
spots form in the middle of tectonic plates. The magma's extreme heat burns through thin crust, and then cools
and forms new crust. Over time, this new land can build up to form volcanoes in the middle of plates or islands
in the ocean. Examples of places where hot spots have occurred include the Hawaiian Islands, the Galapagos
Islands, Iceland, and Yellowstone National Park.
