USGS - science for a changing world

Pacific Coastal & Marine Science Center

Coastal and Marine Earthquake Studies

Western Coastal and Marine Earthquake Studies.


Cascadia Earthquakes & Tsunami Hazard Studies

Volcanoes and Earthquake Hazards of Washington State

image of Mt. Rainier

The Cascade Range is made up of numerous volcanoes such as Mt. Rainier pictured above and Mt. St. Helens pictured below. The magma that occasionally erupts is derived from melting of rocks pushed beneath the Earth's crust by the subduction process.


Learn more about Crustal Structure.


Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo logo U.S. Department of the Interior | U.S. Geological Survey
Page Contact Information: PCMSC Web Team
Page Last Modified: 15 July 1998