Newport–Inglewood Fault

The Newport–Inglewood Fault is a right-lateral strike-slip fault in Southern California. The fault extends for 47 miles (76 km) from Culver City southeast through Inglewood and other coastal communities to Newport Beach at which point the fault extends east-southeast into the Pacific Ocean where it is known as the [Rose Canyon Fault]. The fault can be inferred on the Earth's surface as passing along and through a line of hills extending from Signal Hill to Culver City. The fault has a slip rate of approximately 0.6 millimeter/year (0.02 in/year) and is predicted to be capable of a 6.0–7.4 magnitude earthquake on the moment magnitude scale.

The fault was first identified after a 4.9 magnitude quake struck near Inglewood, California on June 21, 1920. Due to the lack of earthquake-resistant construction in southern California at this time, this quake caused considerable damage in the Inglewood area and was a preview of what was to come almost 13 years later. The Long Beach earthquake occurred on March 10, 1933, centered along the southern segment of this fault, and registering a magnitude 6.3; this quake killed 115 people and was the second most deadly earthquake in California history, after the 1906 San Francisco earthquake. Seventy schools in the Long Beach and Compton area were destroyed and an additional 120 were heavily damaged by the quake; had this tremor struck during school hours, the death toll would have been much higher, some estimates as high as 1000. In response to the poor performance of school structures, the California legislature passed the Field Act in April, mandating earthquake-resistant construction for all new school buildings.

The Newport–Inglewood Fault is part of the larger system of right-lateral strike-slip faults, most prominently the San Andreas Fault, which comprise the transform zone which separates the North American tectonic plate from the Pacific plate. The irregular hills which occur along the fault trace are a result of deformation of the sedimentary rocks by the faulting; some of the earliest petroleum production in California tap reservoirs formed by the deformation. (Wilcox: Basic wrench faulting)

In July 2015, a University of California at Santa Barbara professor reported that helium-3 was leaking naturally from oil wells up to 3 km (1.8 mi) deep, along a 30 mi (48 km) stretch from Los Angeles's Westside to Newport Beach, suggesting that the fault runs deep, though not necessarily changing the earthquake outlook.^[1]

A new National Football League stadium is planned for the former Hollywood Park horse-racing track in Inglewood.^[2] The new stadium will be located within roughly two kilometers of the Newport–Inglewood Fault (when any of the maps cited in sources below are referenced to the planned location). Ironically, the competing location for a stadium in Carson is also very close to the same fault zone.

References

Grant, L. B.; Shearer, P. M. (2004), "Activity of the Offshore Newport–Inglewood Rose Canyon Fault Zone, Coastal Southern California, from Relocated Microseismicity" (PDF), Bulletin of the Seismological Society of America, Seismological Society of America, 94 (2): 747–752
Hauksson, E. (1987), "Seismotectonics of the Newport-Inglewood fault zone in the Los Angeles basin, southern California", Bulletin of the Seismological Society of America, Seismological Society of America, 77 (2): 539–561

External links

M6.8 Earthquake on the Newport Inglewood Fault (Huntington Beach) – Southern California Earthquake Center
Newport-Inglewood Fault Zone – Southern California Earthquake Data Center
Earthquake faults in the South Bay - Palos Verdes Fault
Late Cenozoic Tectonics of Southern California
Helium rising through the Newport-Inglewood fault zone
Pacific-North American plate interaction
Wilcox: Basic wrench tectonics

Seismically active fault zones and tectonic blocks of California

Statewide Faults	San Andreas Fault

Faults, zones, and blocks of Southern California	Brawley Seismic Zone Chino Fault Elsinore Fault Zone Elysian Park Fault Garlock Fault Hosgri Fault Imperial Fault Zone Laguna Salada Fault Newport–Inglewood Fault Peninsular Ranges Puente Hills Fault Raymond Fault Rose Canyon Fault Salton Trough Salinian Block San Cayetano Fault San Felipe Fault Zone San Gabriel Fault San Jacinto Fault Zone Santa Maria River Fault Santa Ynez Fault Shoreline Fault Ventura Fault White Wolf Fault Whittier Fault Yorba Linda Fault

Faults and zones of Northern California	Bartlett Springs Fault Calaveras Fault Clayton-Marsh Creek-Greenville Fault Concord Fault Hayward Fault Zone Healdsburg Fault Maacama Fault Mendocino Fracture Zone Mendocino Triple Junction Mount Diablo Thrust Fault Monta Vista Fault Pleasanton Fault San Gregorio Fault San Pablo Fault Seal Cove Fault Serra Fault Silver Creek Fault Tesla Fault West Napa Fault

Sierra Nevada faults, zones, and blocks	Death Valley Fault Zone Furnace Creek Fault Zone Honey Lake Fault Zone Kern Canyon Fault Maria fold and thrust belt Owens Valley Fault Rescue Lineament-Bear Mountains fault zone Sierra Nevada Batholith Sierra Nevada Fault Sierra Nevada-Great Valley Block Smartville Block Walker Lane

Category California Geological Survey Seismic Hazards Mapping Act Mexico (list)

Significant seismically active faults of North America

North America
(crosses national borders)

Alaska-Aleutian megathrust (US-RU)
Basin and Range Province (US-MX)
Cascadia subduction zone (US-CA)
Clarendon-Linden fault system (US-CA)
Denali Fault (US-CA)
Northern Cordilleran Volcanic Province (CA-US)
Puget Sound faults (US-CA)
Rio Grande rift (US-MX)
San Andreas Fault (US-MX)
Southern Great Lakes Seismic Zone (US-CA)
Tintina Fault (US-CA)

Canada

United States

Washington and Oregon	Brothers Fault Zone Olympic-Wallowa Lineament Puget Sound (Seattle Fault, Tacoma Fault) Walker Lane

California	Calaveras Fault Garlock Fault Hayward Fault Zone Mendocino Fracture Zone Newport–Inglewood Fault Puente Hills Fault Rose Canyon Fault San Jacinto Fault Zone (Elsinore Fault Zone)

Great Basin	Independence Valley fault system Moab Fault Teton Fault Wasatch Fault

Great Plains	Central Oklahoma Fault Zone Humboldt Fault Long Point–Eureka Heights fault system Nemaha Fault Zone Wilzetta Fault

Midwest	Marianna Fault New Madrid Seismic Zone Sandwich Fault Zone Wabash Valley Seismic Zone

Appalachian Mountains and Atlantic Coast	Aiken-Augusta Fault Eastern Tennessee Seismic Zone Middleton Place-Summerville Seismic Zone (Woodstock Fault) Northern Appalachians Seismic Zone Ramapo Fault Virginia Seismic Zone

Caribbean & Mexico

Cayman Trough
Chixoy-Polochic Fault
Enriquillo–Plantain Garden fault zone (Cuba)
Gulf of California Rift Zone
Lesser Antilles subduction zone
Middle America Trench (Central America)
Motagua Fault (Central America)
Pedro Miguel Fault
Puerto Rico Trench

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