ASTER - a geological mapping tool for Canada's north. case study: the Belcher Islands, Hudson Bay, Nunavut, Canada

Wickert, L M; Budkewitsch, P

doi:10.1109/igarss.2004.1368655

Cited by 1 publication

(1 citation statement)

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“…Spectral angle mapper (SAM) is a classification technique, which is suitable for preparation of lithological mapping of minerals and other rock formations with unique spectral shapes by computing spectral similarities between image spectra and reference spectra (Clark et al ., ; Harsanyi et al ., ; De Carvalho & Meneses, ). This technique is used widely on hyperspectral satellite data (Wickert & Budkewtisch, ; Bedini et al ., ).…”

Section: Methodsmentioning

confidence: 99%

Application of ASTER and Landsat TM Data for Geological Mapping of Esfandagheh Ophiolite Complex, Southern Iran

2014

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This research developed an approach to enable the discrimination of lithological units and detection of host rock of chromitite bodies within ophiolitic complexes using the advanced spaceborne thermal emission and reflection radiometer (ASTER) and Landsat thematic mapper (TM) satellite data. Three main ophiolite complexes located in southern Iran were selected for the study. A specialized band ratio (4/1, 4/5, 4/7) of ASTER, minimum noise fraction (MNF) components and spectral angle mapper (SAM) on ASTER and Landsat TM data were used to distinguish ophiolitic rock units. Results show that the specialized band ratio was able to identify different rock units and serpentinized dunite as host rock of chromitites within ophiolitic complexes. Minimum noise fraction components of ASTER and Landsat TM data are suitable for distinguishing ophiolitic rock complexes at a regional scale. The integration of SAM and feature level fusion used in this investigation discriminated the ophiolitic rock units and provided geological map for the study area, including identification of high potential areas (serpentinite dunite) for chromite exploration targets.

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Section: Methodsmentioning

confidence: 99%