The distribution of Proterozoic volcanic rocks in Arizona in relation to the three major crustal belt described in Anderson's 'Proterozoic Plate Tectonic Evolution of Arizona' (1989).
Online resources:
Anderson, P., Proterozoic Geology of the Bradshaw Mountains and environs, Central Arizona. Arizona Geological Survey Contributed Map 17-B, 11 map plates, 1:24,000 map scale.
