HYDROXYL AND IRON-STAINED ALTERATION INFORMATION EXTRACTION AND METALLOGENIC PREDICTION BASED ON MEDIUM-HIGH-RESOLUTION REMOTE SENSING IMAGES: A Case Study of Six Map Sheets in Jilin City
CAO Hui1, ZHANG Ting-xiu2, LI Yu-ke1, HAN Ke-yin1, WEN Qiu-yuan1, Wang Hai-ying3
1. Mudanjiang Centre of Natural Resources Comprehensive Survey, CGS, Mudanjiang 157021, Heilongjiang Province, China; 2. Jilin Institute of Geological Survey, Changchun 130021, China; 3. Beipiao Natural Resources Bureau, Beipiao 122100, Liaoning Province, China
Abstract:Based on the Landsat 8 and SPOT-6 remote sensing (RS) data, combined with the RS image features and 1:50 000 geographical base map of the study area, the visual interpretation is used to interpret the strata, linear structure and ring structure. The ratio-principal component analysis is adopted to extract the hydroxyl and iron-stained alteration information. Through comprehensive analysis of RS-interpreted fault structure, ring structure and altered mineralization information, the favorable ore-forming sites are delineated from the perspective of remote sensing for reference in field prospecting.
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CAO Hui, ZHANG Ting-xiu, LI Yu-ke, HAN Ke-yin, WEN Qiu-yuan, Wang Hai-ying. HYDROXYL AND IRON-STAINED ALTERATION INFORMATION EXTRACTION AND METALLOGENIC PREDICTION BASED ON MEDIUM-HIGH-RESOLUTION REMOTE SENSING IMAGES: A Case Study of Six Map Sheets in Jilin City. GEOLOGY AND RESOURCES, 2021, 30(6): 710-715,706.
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