Sand Boil produced by Liquefaction, El Centro, California
Copyright Information: All images are in the public domain and available for free. If you use this image, credit NOAA/NGDC, University of Colorado at Boulder. |
The photo shows one of many sand boils that formed near El Centro. At localities where the water table is close to the surface, compaction of saturated unconsolidated materials is often accompanied by ejection of water or water-sediment mixtures forming sand boils. Image Credit: University of Colorado at Boulder October 15, 1979 El Centro USA earthquake The magnitude 6.9 earthquake caused $30 million property damage and injured 91 people. Event Data:
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