Project Title: Structural, Petrologic, Geochemical, and Hydrothermal Characteristics Of Concealed Geothermal Systems Associated With Tectonically Active Range Margins In The Great Basin

Scope

To prepare an integrated, multidisciplinary geological study of selected range-margin fault zones and associated hydrothermal systems active since the mid Miocene to determine how time-space migration of fossil hydrothermal (geothermal) systems.
To prepare a GIS format, suitable for pattern recognition of ages and fluid characteristics of selected hydrothermal systems in west-central Nevada, obtained by a variety of dating, thermometric, chemical, and isotopic techniques, will be combined with analyses of structural, lithologic, and hydrologic controls of those systems, derived from field mapping and petrography.

To develop criteria for vectoring hidden geothermal resources from low-cost surface studies along range fronts and piedmonts.
To facilitate accomplishment, the project will
- utilize characteristics of the well-studied Dixie Valley geothermal area
- structure the approach and models to be transportable to characterization of many other potential geothermal resources within the Great Basin.

Task 1:	Structural mapping along selected range margins
Task 2:	Field analysis of range-margin hydrothermal systems
Task 3:	Geochemistry and geochronology of range-margin hydrothermal systems
Task 4:	Analysis of time and space relationships among structural, petrologic, and other data in a GIS framework.

Gerry Nix
National Renewable Energy Laboratory
Bus: (303) 384-7566
E-mail: gerry_nix@nrel.gov