Monday’s magnitude 4.4 quake that rattled Southern California is believed to have struck on a well-known and dangerous fault system known as the Puente Hills thrust fault system.

A California fault line remains relatively unknown. It caused last week’s quake and might be the site of ‘the big one’ - The 10-mile deep Puente Hills thrust fault runs beneath downtown Los ...

In thrust faults, one block of the Earth's crust moves up or down relative to the fault's other side; in faults like the world-famed San Andreas, ...

Impact: The 1933 earthquake was Southern California’s deadliest in the modern record, leaving nearly 120 dead and causing $40 million in property damage. In the past, this fault has started ...

The 4.4 magnitude earthquake that was felt in many Southern California cities Monday fell on the Puente Hills Thrust Fault System, which is potentially the most destructive in the region.

A fault that juts beneath the surface of Los Angeles County’s South Bay, once thought to be sleeping, is actually awake and active. Skip to content. All Sections. Subscribe Now. 58°F.

Its speed is far slower than other blind-thrust faults in the region, such as the blind-thrust fault that caused the Northridge quake, which moves at about 7 milimeters per year.

Earthquakes on thrust faults can spread 10 times farther to a second nearby thrust fault than previously thought. by University of California - Riverside ...

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 ...