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.
Welcome to Apache Junction Marker. Apache Junction is a city in Maricopa and Pinal counties in the state of Arizona. According to the 2010 census, the population of the city was 35,840, most of whom lived in Pinal County. Apache Junction is named for the junction of the Apache Trail and U.S. Route 60. Superstition Mountain, the westernmost peak of the Superstition Mountains, is nearby.