Accession Number : ADP001998

Title :   Geobotanical Discrimination of Ultramafic Parent Materials: An Evaluation of Remote Sensing Techniques,

Corporate Author : NATIONAL AERONUATICS AND SPACE ADMINISTRATION MOFFETT FIELD CA AMES RESEARCH CENTER

Personal Author(s) : Mouat,D. A. ; Morrissey,L. A. ; Horn,E. M.

Report Date : JUN 1982

Pagination or Media Count : 10

Abstract : Color and color infrared aerial photography and imagery acquired from a Daedalus DEI-1260 multispectral airborne scanner were employed in an investigation to discriminate ultramafic rock types in a test site in southwest Oregon. An analysis of the relationships between vegetation characteristics and parent materials was performed using a vegetation classification and map developed for the project, lithologic information derived from published geologic maps of the region, and terrain information gathered in the field. Several analytical methods including visual image analysis, band ratioing, principal components analysis, and contrast enhancementg and subsequent color composite generation were used in the investigation. There was a close correspondence between vegetation types and major rock types. These were readily discriminated by the remote sensing techniques. It was found that ultramafic rock types were separable from non-ultramafic rock types and serpentine was distinguishable from non-serpentinized peridotite. Further investigations involving spectroradiometric and digital classification techniques are being performed to further identify rock types and to discriminate chromium and nickel-bearing rock types. (Author)

Descriptors :   *Rock, *Vegetation, Oregon, Aerial photography, Multiband spectral reconnaissance

Distribution Statement : APPROVED FOR PUBLIC RELEASE