EVALUATION OF LOW-SUN ILLUMINATED LANDSAT-4 THEMATIC MAPPER DATA FOR MAPPING HYDROTHERMALLY ALTERED ROCKS IN SOUTHERN NEVADA.
By: Melvin H. Podwysocki, Marty S. Power, Jack Salisbury, and O. D. Jones
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Abstract
Landsat-4 Thematic Mapper (TM) data of southern Nevada collected under conditions of low-angle solar illumination were digitally processed to identify hydroxyl-bearing minerals commonly associated with hydrothermal alteration in volcanic terrains. Digital masking procedures were used to exclude shadow areas and vegetation and thus to produce a CRC image suitable for testing the new TM bands as a means to map hydrothermally altered rocks. Field examination of a masked CRC image revealed that several different types of altered rocks displayed hues associated with spectral characteristics common to hydroxyl-bearing minerals. Several types of unaltered rocks also displayed similar hues.
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | EVALUATION OF LOW-SUN ILLUMINATED LANDSAT-4 THEMATIC MAPPER DATA FOR MAPPING HYDROTHERMALLY ALTERED ROCKS IN SOUTHERN NEVADA. |
| Year Published | 1984 |
| Language | English |
| Publisher | Environmental Research Inst of Michigan |
| Publisher location | Ann Arbor, MI, USA |
| First page | 541 |
| Last page | 551 |
| Conference Title | Proceedings of the International Symposium on Remote Sensing of Environment, Third Thematic Conference: Remote Sensing for Exploration Geology. |
| Conference Location | Colorado Springs, CO, USA |
| Google Analytic Metrics | Metrics page |