Application of singularity index mapping technique to gravity/magnetic data analysis in southeastern Yunnan mineral district,China |
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| Affiliation: | 1. MLR Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing, 100037, PR China;2. Department of Earth and Space Science and Engineering, York University, Toronto, ON, Canada M3J1P3;3. State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, Wuhan 430074, PR China;1. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;2. State Key Lab of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China;1. College of Earth Science, Jilin University, Changchun 130061, PR China;2. Lab of Continental Collision and Plateau Uplift, Qinghai–Tibet Plateau Institute of the Chinese Academy of Sciences, Beijing 100101, PR China |
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| Abstract: | The fractal/multifractal based singularity index mapping technique efficient in characterizing singular physical or chemical properties is applied for the analysis of gravity and aeromagnetic data in southeastern Yunnan mineral district, China. As follow-up after the introduction of singularity theory to geochemical and geological mapping scenarios, this study extends its application to delineate geophysical potential fields. Based on low gravity and low magnetic properties of granitic intrusions in the study area, singularity mapping technique is used as a high-pass filter to emphasize the geophysical anomalies caused by granitic intrusions in support of future mineral exploration. Comparing with the traditionally used band-pass filtering method, it is shown that the new technique provides an improved and simplified approach in geophysical data analysis with the advantage of scale independence. |
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