Light mag. 4.5 earthquake – 3km WSW of South El Monte, CA, USA on Saturday, Report

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Light mag. 4.5 earthquake - 3km WSW of South El Monte, CA, USA on Saturday, Report
Light mag. 4.5 earthquake - 3km WSW of South El Monte, CA, USA on Saturday, Report

In addition to fallen objects and cracks in streets, many people found new small cracks in walls as a result of the quake:

During the first hour, we received more than 2000 reports from people in the LA area who felt the quake. Most described the tremor as a rattling vibration that lasted 5-10 seconds.

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In many areas near the epicenter, things fell from shelves in houses and stores, but there seems to be no major damage. Small cracks opened on some streets as well.

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According to seismologists, the quake likely resulted from a movement along the Puente Hills blind thrust fault, which runs beneath the center of LA and therefore is one of the most dangerous ones in the LA area.
A thrust fault is one where the 2 adjacent crustal blocks on either side of the fault plane are pushed together and moved partly one over another as a result of compression. A bling fault refers to the situation when the fault fracture is not reaching the surface. In the LA area, such blind faults are related to a curvature in the the nearby San Andreas fault.

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