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Ground Failure

Geotechnical Observations of the November 3, 2002 M7.9 Denali Fault Earthquake

Figure 2.

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Massive rock avalanches off north-facing slopes of the Black Rapids Glacier valley. Though some landslides were spectacular in dimension, most were confined to a narrow zone within 30 kilometers of the fault rupture. This zone was much narrower than the zone of liquefaction effects.

Photo of Black Rapids Glacier valley.
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last modified 20 January 2005