FAULT ESCARPMENTS

DESCRIPTION: A fault escarpment (or scarp) is a surface separating a down dropped from an upthrown block.

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Figure 1 - THE WASATCH FAULT ESCARPMENT.   The Wasatch Fault runs parallel to the Wasatch Mountains to the east.  It is actually  a series of about 10 fault segments of which about 5 are active.  The faults run about 220 miles between southeast Idaho to central Utah. The fault plane dips to the west. Normal faulting has resulted in mountains to the east of the fault and valleys of the Basin and Range Province to the west. Over the past 10,000 years, earthquakes of magnitude 7+ occur about every 1000 years.