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The Puente Hills Fault (also known as the Puente Hills Thrust Fault System) is an active geological fault that is located in the Los Angeles Basin in California. The thrust fault was discovered in 1999 and runs about 40 km (25 mi) in three discrete sections from the Puente Hills region in the southeast to just south of Griffith Park in the ...
The Puente Hills thrust fault is the same overall fault network that produced the Whittier Narrows – which measured a 5.9 magnitude, killed eight people and caused some $358 million in damage in ...
Simplified fault map of southern California The faults of Southern California viewed to the southeast, as modeled by the Southern California Earthquake Center. Highlighted in purple are the San Andreas Fault (left) and Santa Monica Bay complex (right). The foreground is in the Santa Barbara Channel, the east-trending zone marks the Transverse ...
This can form a hill and valley landform, with the hills being the strong sections, and the valleys being the highly disturbed thrust faulted and folded sections. After a long period of erosion the visible landscape may be flattened, with material eroded from the hills filling up the valleys and hiding the underlying hill-and-valley geology ...
The Puente Hills thrust fault system is in a broad zone directly underneath the densest parts of the L.A. area, including downtown Los Angeles, which has many old and unretrofitted buildings, as ...
A magnitude 7.5 quake in the Puente Hills thrust fault system — which runs under highly populated areas of L.A. and Orange counties — could kill 3,000 to 18,000 people, according to the U.S ...
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The mainshock occurred near the northwestern border of Puente Hills 3 km (1.9 mi) north of the Whittier Narrows at a depth of 14 km (8.7 mi). First motion polarities, along with modeling of teleseismic P and S waves, established that the thrust fault responsible for the shock strikes east–west with a dip of 25° dip to the north. The shock ...