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Assessment of geothermal resources at Newcastle, Utah

January 1, 1989

Integrated geology, geophysics, and geochemistry studies in the Newcastle area of southwest Utah are used to develop a conceptual geologic model of a blind, moderate-temperature hydrothermal system. Studies using 12 existing and 12 new, thermal gradient test holes, in addition to geologic mapping, gravity surveys, and other investigations have helped define the thermal regime. Preliminary results indicate that the up-flow region is located near the west-facing escarpment of an adjacent mountain range, probably related to the bounding range-front fault. Chemical geothermometers suggest equilibration temperatures ranging from 140??C to 170??C. The highest temperature recorded in the system is 130??C from an exploration well drilled by the Unocal Corporation.

Publication Year 1989
Title Assessment of geothermal resources at Newcastle, Utah
Authors Robert E. Blackett, Michael A. Shubat, David S. Chapman, Craig B. Forster, Charles M. Schlinger
Publication Type Conference Paper
Publication Subtype Conference Paper
Index ID 70015244
Record Source USGS Publications Warehouse