Earthquake Hazards Program
A graben is a down-dropped block of the earth's crust resulting from extension, or pulling, of the crust.
Horst and Graben Flash Animation
See also: horst.
Horst and graben diagram.
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U.S. Department of the Interior | U.S. Geological Survey
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Page Last Modified: April 07, 2016 17:20:03 UTC