Geologic map of southeastern Santa Catalina Mtn, Tucson, Arizona, and cross section A-A' by A. Bykerk-Kauffman (2008).
The entire map and two additional cross sections can be downloaded: http://repository.azgs.az.gov/uri_gin/azgs/dlio/767
Photographer: Anna Bykerk-Kauffman
Photo Date: 2008