Hydrothermal alteration mineral mapping using hyperspectral imagery in Dixie Valley, Nevada

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Journal Article: Hydrothermal alteration mineral mapping using hyperspectral imagery in Dixie Valley, Nevada

Abstract
Hyperspectral (HyMap) data was used to map the location ofoutcrops of high temperature, hydrothermally alterated minerals(including alunite, pyrophyllite, and hematite) along a 15 kmswath of the eastern front of the Stillwater Mountain Range inDixie Valley, Nevada. Analysis of this data set reveals that severaloutcrops of these altered minerals exist in the area, and thatone outcrop, roughly 1 square kilometer in area, shows abundanthigh temperature alteration. Structural analysis of the alteredregion using a Digital Elevation Model (DEM) suggests that thisoutcrop is bounded on all sides by a set of cross-cutting faults.This fault set lies within the Dixie Valley Fault system (Caskeyet al. 1996). Both the intense alteration in this area and the presenceof cross-cutting faults indicate a high probability of recenthot fluid escape.

Authors 
T. Kennedy-Bowdoin, B. A. Martini, E. A. Silver and W. L. Pickles








Published Journal 
Transactions-Geothermal Resources Council, 2003





DOI 
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Online 
Internet link for Hydrothermal alteration mineral mapping using hyperspectral imagery in Dixie Valley, Nevada

Citation

T. Kennedy-Bowdoin,B. A. Martini,E. A. Silver,W. L. Pickles. 2003. Hydrothermal alteration mineral mapping using hyperspectral imagery in Dixie Valley, Nevada. Transactions-Geothermal Resources Council. 27:649-652.


Related Geothermal Exploration Activities
Activities (1)


Areas (1)
  1. Dixie Valley Geothermal Area
Regions (0)