sentences:  Crustal stretching beginning about 15 million years ago created Basin and Range topography in central and southern Arizona, caused volcanic activity near Jerome, and induced movement along the Verde Fault.This movement exposed the tip of the United Verde ore body at one place on Cleopatra Hill and moved the UVX ore body to below the surface.Basalt, laid down between 15 and 10 million years ago, covers the surface beneath the UVX headframes and Jerome State Historic Park.