Tertiary stratigraphic and structural relationships in the Copper Butte area, Teapot mountain quadrangle, Pinal County, Arizona

The complex Tertiary stratigraphic and structure around the copper prospect at Copper Butte, which lies within the Teapot Mountain quadrangle (Creasey and others, 1983) approximately 6 km southwest of the Ray Mine, were evaluated by remapping nearly 20 km2 in the vicinity of Copper Butte. Relationships mapped within the Copper Butte area are important for understanding the Tertiary tectonics of the surrounding region. Discussions of detailed structural and stratigraphic relationships are made with reference to the accompanying map (p. 15). As no units younger than mid-Miocene in age are exposed within the Copper Butte area, this study provides no information about post-mid-Miocene geologic history.