Geologic map of the Patagonia Mountains, Santa Cruz County, Arizona

Open-File Report 2015-1023
By: , and 



The Patagonia Mountains contain two large porphyry Cu-Mo systems each with separate associated hypogene and supergene zones, two high-grade Cu-Mo breccia pipes, one large epithermal Ag-Pb-Zn-Mn deposit, and numerous additional areas of base- and precious-metal mineralization all zoned around a Laramide-age composite batholith of intermediate composition. Compilations and new work by Vikre and others (2014) have identified as many as eight separate intrusive phases of the batholith and five separate hydrothermal events spanning at least 16 m.y., in addition to a supergene enrichment event of middle Tertiary age. The geologic map presents a spatial context for this important new information that is intended to support further work in this highly mineralized region.

Several spatial databases provide data for the geologic map of the Patagonia Mountains in Arizona. The data can be viewed and queried in ArcGIS 10, a geographic information system; a geologic map is also available in PDF format. All products are available online only.

Study Area

Publication type Report
Publication Subtype USGS Numbered Series
Title Geologic map of the Patagonia Mountains, Santa Cruz County, Arizona
Series title Open-File Report
Series number 2015-1023
DOI 10.3133/ofr20151023
Year Published 2015
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) Geology, Minerals, Energy, and Geophysics Science Center
Description Pamphlet: 10 p.; Mapsheet: 38.57 x 31.32 inches; Spatial database; Readme; Metadata
Country United States
State Arizona
County Santa Cruz County
Other Geospatial Patagonia Mountains
Datum North American Datum of 1927
Projection Universal Transverse Mercator projection
Scale 48000
Online Only (Y/N) Y
Additional Online Files (Y/N) Y
Google Analytic Metrics Metrics page
Additional publication details