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Growth of a tectonic ridge during the Landers earthquake

January 1, 1997

The formation of tectonic ridges by localized vertical uplift along strike-slip faults has long been suspected, but the actual growth of a tectonic ridge during an earthquake has never been documented. During the 1992 Landers, California, earthquake sequence, an awl-shaped, dome-like topographic ridge along the Emerson fault zone increased its height at least 1 m concurrently with 3 m of right-lateral shift across the fault zone containing the ridge. Five deformation vectors within the ridge reveal dilatant behavior in addition to the uplift and shift on boundary faults.

Publication Year 1997
Title Growth of a tectonic ridge during the Landers earthquake
DOI 10.1130/0091-7613(1997)025<0323:GOATRD>2.3.CO;2
Authors R. W. Fleming, A. M. Johnson
Publication Type Article
Publication Subtype Journal Article
Series Title Geology
Index ID 70019417
Record Source USGS Publications Warehouse