Earthquake Causes Tsunami. Energy accumulates in the overriding plate until it exceeds the frictional forces between the two stuck plates. When this happens, the overriding plate snaps back into an unrestrained position. This sudden motion is the cause of the tsunami - because it gives an enormous shove to the overlying water.
Ajo is in the Sonoran Desert, tucked away in Western Pima County in Arizona, about 120 miles southwest of Phoenix and 130 miles west of Tucson.
Alpine, Arizona. Alpine is an unincorporated community and census-designated place in Apache County, Arizona, United States, in Bush Valley in the east central part of the state. As of the 2010 census, it had a population of 145. Contents.