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.
With a population of 53,500 residents and covering 4,796 square miles, Gila County has always been a great place to live, work and play. Gila County is in Central Arizona and contains the Tonto Apache Reservation and parts of the Fort Apache and San Carlos Reservations. The county was formed in 1881 from parts of Maricopa and Pinal Counties, and later added the northern portion of the county from Yavapai County.