GeoFile 2012-06: Mapping BC's Golden Triangle Using ASTER Imagery
Mineral Exploration Roundup 2012 Poster
View GeoFile 2012-06 (PDF, 16.2 MB)
The Advanced Space-borne Thermal Emission and Reflection Radiometer (ASTER) has been found effective for geological mapping applications due to its high spectral resolution in the Shortwave Infrared (SWIR) wavelengths of the electromagnetic wave; frequent revisit cycle and wide swath; and affordability of acquiring images to cover large geographic areas. Using ASTER imagery to map BC's geology, however, faces a few challenges, among others, including complex terrain and dense vegetation coverage. This may partially explain why there are not many documented studies in this regard. This study focuses on testing ASTER's ability on mapping the general rock groups in BC's “Golden Triangle” area, which is chosen for the vibrant exploration and mining activities in its vicinity and good surface exposure of bedrock rock, a prerequisite for any optical remote sensing based-mapping.
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