Southern California Earthquake Data Center

Significant Earthquakes and Faults

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Fault Name Index

Elmore Ranch Fault (Includes West Elmore Ranch Fault)

Type of Faulting: left-lateral strike-slip
Length: about 10 km
Nearest Community: Westmorland
Last Major Rupture: November 23, 1987; Mw6.2
Slip Rate: between 0.5 and 1.5 mm/yr
Interval Between Major Ruptures: 150 to 300 years (?)
Maximum Surface Offset: ML 5.8 to 6.5

Elmore Ranch East Fault

Type of Faulting: right-lateral strike-slip
Length: about 10 km
Nearest Community: Westmorland
Last Major Rupture: November 23, 1987; Mw6.2
Slip Rate: between 0.5 and 1.5 mm/yr
Interval Between Major Ruptures: 150 to 300 years (?)
Probable Magnitudes: ML 5.8 to 6.5

 

Lone Tree Fault

Type of Faulting: right-lateral strike-slip
Length: about 8 km
Nearest Community: Westmorland
Last Major Rupture: November 23, 1987; Mw6.2
Slip Rate: between 0.5 and 1.5 mm/yr
Interval Between Major Ruptures: 150 to 300 years (?)
Probable Magnitudes: ML 5.7 to 6.3

 

References


These faults are featured on the following map:
Southern Fault Map

 

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