Rockslide
U.S. Geological Survey photo by Bruce Molnia (fair use policy)
A rockslide is a mass of freshly broken rock material that moves by gravity in one swift movement. There is no creeping motion before or after, and the original mass is more or less completely disrupted. These multiple rockslides were triggered by the 1964 Alaska earthquake; the fact that they fell onto a glacier makes them easy to see. Read more about these and other types of landslide in "It Must Come Down." See other types of landslides in the Landslide Picture Gallery.
Fossils
Geologic Features and Processes
Glaciers and Ice
Landforms
Minerals
Rocks
Geology and Society
