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Geologic and mineral and water resources investigations in western Colorado using ERTS-1 dataThe author has identified the following significant results. Topography was found to be the most important factor defining folds on ERTS-1 imagery of northwestern Colorado; tonal variations caused by rock reflectance and vegetation type and density are the next most important factors. Photo-linears mapped on ERTS-1 imagery of central Colorado correlate well with ground-measured joint and fracture trends. In addition, photo-linears have been successfully used to determine the location and distribution of metallic mineral deposits in the Colorado Mineral Belt. True color composites are best for general geologic analysis and false color composites prepared with positive/negative masks are useful for enhancing local geologic phenomena. During geologic analysis of any given area, ERTS-1 imagery from several different dates should be studied.
Document ID
19740009893
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Knepper, D. H., Jr. (Colorado School of Mines Golden, CO, United States)
Hutchinson, R. M. (Colorado School of Mines Golden, CO, United States)
Sawatzky, D. L. (Colorado School of Mines Golden, CO, United States)
Trexler, D. W. (Colorado School of Mines Golden, CO, United States)
Bruns, D. L. (Colorado School of Mines Golden, CO, United States)
Nicolais, S. M. (Colorado School of Mines Golden, CO, United States)
Date Acquired
September 3, 2013
Publication Date
December 1, 1973
Subject Category
Geophysics
Report/Patent Number
NASA-CR-136825
PR-9
REPT-73-5
E74-10330
Accession Number
74N18006
Funding Number(s)
CONTRACT_GRANT: NAS5-21778
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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