earthquake histories

Natural disasters - Earthquake Case Histories


based on lecture notes of Prof. Stephen A. Nelson, Tulane University

The 1994 Northridge Earthquake (magnitude 6.7), that occurred just north of Los Angeles in the San Fernando Valley.  

The Northridge Earthquake did not occur along the San Andreas Fault, as most people assume, but instead occurred along a buried fault called a blind thrust fault, because it does not show up at the surface.  A block diagram of a blind thrust fault is shown below.

BlindThrust.jpg

The Origin of Blind Thrust Faults SCalFaults.jpg

faultbends.jpg

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