January 3, 2006
The Basin–
Step back from the Tanque Verde Valley to the larger context of the Tucson Basin. The Basin was formed millions of years ago, when the crust split and what is now the Tucson Mountains moved 20 miles west. The edges of the crack puckered up into the Tucsons, the Tortillito Mountains to the north on the top left corner of the map, the Santa Catalina Mountains to the north, and the Rincon Mountains to the east. The crack filled with debris, forming the floor of the Tucson Basin and the aquifer that supplies our wells. The red oval in the crook of the mountains is our valley.
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