Publication Date:
2019-07-13
Description:
Digitally enhanced LANDSAT MSS data were used to discriminate among basalt flows of historical to Tertiary age, at a test site in Northwestern Saudi Arabia. Spectral signatures compared favorably with a field-defined classification that permits discrimination among five groups of basalt flows on the basis of geomorphic criteria. Characteristics that contributed to age definition include: surface texture, weathering, color, drainage evolution, and khabrah development. The inherent gradation in the evolution of geomorphic parameters, however, makes visual extrapolation between areas subjective. Therefore, incorporation of spectrally-derived volcanic units into the mapping process should produce more quantitatively consistent age groupings.
Keywords:
EARTH RESOURCES AND REMOTE SENSING
Type:
E84-10189
,
NASA-TM-86141
,
NAS 1.15:86141
,
Am. Soc. of Photogrammetry; Sep 09, 1984 - Sep 14, 1984; San Antonio, TX; United States
Format:
application/pdf
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