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Evaluation of 0.46- to 2.36-micrometre multispectral scanner images of the East Tintic mining district, Utah, for mapping hydrothermally altered rocks.

Economic Geology

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Abstract

Airborne multispectral scanner images recorded in the 0.46 to 2.36 micrometre region for the E Tintic mining district, Utah, were evaluated to determine their usefulness for distinguishing six types of hydrothermally altered rocks from a wide range of sedimentary and igneous rock types. The laboratory and field evaluation of a color ratio composite image, supported by in situ spectral reflectance measurements and an alteration map compiled from a published map, shows that silicified, argillized, and pyritized rocks can be mapped in detail utilizing an intense OH absorption band centered near 2.2 micrometre. This absorption band is absent or weak in most of the unaltered rocks. -from Authors

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Evaluation of 0.46- to 2.36-micrometre multispectral scanner images of the East Tintic mining district, Utah, for mapping hydrothermally altered rocks.
Series title:
Economic Geology
Volume
77
Issue:
2
Year Published:
1982
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
441
Last page:
452
Number of Pages:
12