Citation: | 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[J]. Geology and Resources, 2021, 30(6): 710-715, 706. doi: 10.13686/j.cnki.dzyzy.2021.06.010 |
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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Distribution map of RS-interpreted fault and ring structures in the study area
Scatter plot of B4/B1 bands
Scatter plot of B6/B7 bands
RS-interpreted hydroxyl alteration anomaly map
RS-interpreted iron-stained alteration anomaly map
RS-interpreted integrated anomaly map of the study area