Unlike other earthquake-prone places around the planet, California is overdue for a major quake, according to a recent study.

The Puente Hills thrust fault runs beneath downtown Los Angeles and Orange County – two highly populated areas. The 10-mile deep fault angles like a ramp and gets closest to the surface near the ...

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.

Monday’s 4.4 magnitude earthquake near Los Angeles’ Highland Park neighborhood occurred along the Puente Hills Fault, also known as the Puente Hills Thrust Fault system. This 25-mile-long ...

Seismologist Lucy Jones, a Caltech research associate, said the earthquake, centered in the Eastside neighborhood of El Sereno, occurred on the Puente Hills thrust fault system. It’s the same ...

The quake ruptured on a small section of a fault associated with the Puente Hills thrust fault system, which has long been cited as a major seismic hazard for Southern California because it runs ...

A specific type of reverse fault, called a thrust fault, has a shallower angle and can push older rock layers above younger ones, creating significant geological formations. Strike-slip faults ...

While neither caused any major damage, experts have warned that Monday's quake may have been associated with the Puente Hills thrust fault, which could one day cause a huge earthquake in Los Angeles.

Seismologist Dr. Lucy Jones said the Puente Hills Blind Thrust system was responsible for the quake. The same fault system caused the Whittier Narrows earthquake, a 5.9 temblor that occurred at 7: ...