Bibliography of geothermal resources in the San Carlos-Safford-Duncan Nonpoint-Source Management Zone, Arizona

The San Carlos-Safford-Duncan Nonpoint-Source Management Zone (Figure 1) is known to contain significant quantities of geothermal energy resources. Following the energy crisis in the 1970s, these resources were studied in detail. This report includes references pertaining to geothermal energy resources, hot springs and wells, heat flow measurements, and geothermal gradients. Two geothermal reservoirs are located in Greenlee County. One ofArizona's most important Known Geothermal Resource Areas (KGRA) is at Clifton. References pertaining to geothermal resource evaluations for Greenlee County and the Clifton KGRA include Witcher (1979a), Arizona Geothermal Commercialization Team( 1979), Witcher and Stone (1980), Witcher (1981), and Hahman (1979a, b). The Safford basin, in Graham County, contains at least four proven and potential geothermal reservoirs of less than 1.2 km depth and three inferred moderate to high-temperature reservoirs less than 2.5 kIn depth (Arizona Geothermal Commercialization Team, 1979). Studies by Witcher, 1979b, 1981, 1982) Rahman, (1979a) and Halnnan and others (1979) focused on characterizing the nature and extent ofgeothermal anomalies in the Safford area. (7 pages)Documents in the AZGS Document Repository collection are made available by the Arizona Geological Survey (AZGS) and the University Libraries at the University of Arizona. For more information about items in this collection, please contact azgs-info@email.arizona.edu