Relative inactivity during the last 140,000 years of a portion of the La Paz fault,southern Baja California Sur,Mexico |
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| Authors: | B J Szabo B P Hausback J T Smith |
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| Institution: | (1) U.S. Geological Survey, Denver Federal Center, Box 25046, 80225 Denver, Colorado, USA;(2) Geology Department, California State University, 95819 Sacramento, California, USA;(3) 1527 Byron St., 94301 Palo Alto, California, USA |
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| Abstract: | Uranium-series dating of corals overlying the undeformed Punta Coyote gravels indicates that the underlying La Paz fault zone has been relatively inactive in this part of the Baja California peninsula during the last 140,000 years, and possibly for a significantly longer period. However, Holocene seismic activities along extensions of the fault zone north of Cabo San Lucas suggest potential seismic hazards for the city of La Paz (population 200,000), which lies about 6 km from the fault. |
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