San Jacinto Fault Zone
E63190
The San Jacinto Fault Zone is a major active strike-slip fault system in Southern California that accommodates a significant portion of the region’s tectonic motion and poses substantial earthquake hazard.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| influenced by San Jacinto Fault Zone | 1 |
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
geologic fault
ⓘ
plate boundary fault ⓘ strike-slip fault zone ⓘ |
| accommodates | significant portion of Pacific–North American plate motion ⓘ |
| age | Late Cenozoic ⓘ |
| associatedWith | San Jacinto Mountains uplift ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| deformationStyle | brittle crustal faulting ⓘ |
| discovered | late 19th century ⓘ |
| displacementRate | about 10–20 millimeters per year ⓘ |
| earthquakeHistory | numerous moderate to strong earthquakes in historic time ⓘ |
| earthquakePotential | large damaging earthquakes ⓘ |
| formsBoundaryBetween | San Jacinto Mountains and Inland valleys ⓘ |
| hazard | major earthquake hazard in Southern California ⓘ |
| length |
approximately 130 miles
ⓘ
approximately 210 kilometers ⓘ |
| locatedIn | Southern California ⓘ |
| maximumMagnitudeEstimate | around magnitude 7.5 ⓘ |
| monitoredBy |
California Integrated Seismic Network
ⓘ
surface form:
Southern California Seismic Network
United States Geological Survey ⓘ |
| motionType | right-lateral strike-slip ⓘ |
| namedAfter | San Jacinto Mountains ⓘ |
| notableEarthquake |
1918 San Jacinto earthquake
ⓘ
1937 Terwilliger Valley earthquake ⓘ 1968 Borrego Mountain earthquake ⓘ 1987 Superstition Hills earthquake sequence ⓘ |
| orientation | northwest–southeast ⓘ |
| parallelTo | San Andreas Fault ⓘ |
| partOf | San Andreas fault system ⓘ |
| passesNear |
Anza Valley
ⓘ
surface form:
Anza
Hemet ⓘ Riverside ⓘ San Bernardino ⓘ San Jacinto, California ⓘ |
| plateBoundaryType | transform ⓘ |
| region |
Inland Empire
ⓘ
Peninsular Ranges ⓘ |
| relativeSlipRate | one of the fastest-slipping faults in Southern California ⓘ |
| riskTo | densely populated areas of Southern California ⓘ |
| segment |
Anza segment
ⓘ
Borrego segment ⓘ Clark segment ⓘ Coyote Creek (Santa Clara County) ⓘ
surface form:
Coyote Creek segment
San Bernardino segment ⓘ San Jacinto Valley ⓘ
surface form:
San Jacinto Valley segment
Superstition Mountain segment ⓘ |
| seismicActivity | high ⓘ |
| tectonicRole | accommodates part of shear between Pacific and North American plates ⓘ |
| tectonicSetting |
Pacific–North American plate boundary system
ⓘ
surface form:
Pacific–North American plate boundary
|
| terminatesNear | Imperial Valley ⓘ |
| trend | northwest ⓘ |
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
influenced by San Jacinto Fault Zone