Application of Singularity Theory in Prediction of Tin and Copper Mineral Deposits in Gejiu District,Yunnan,China:Weak Information Extraction and Mixing Information Decomposition
CHENG Qiu-ming1,2,ZHAO Peng-da1,CHEN Jian-guo1,XIA Qing-lin1,CHEN Zhi-jun1,ZHANG Sheng-yuan3,XU De-yi1,4,XIE Shu-yun1,5,WANG Wen-lei21.State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan430074,Beijing100083,China2.Department of Earth and Space Science and Engineering,York University,TorontoM3J1P3,Canada3.Institute of Natural Resource and Environment Engineering,Shijiazhuang University of Economics,Shijiazhuang050031,China4.School of Economics and Management,China University of Geosciences,Wuhan430074,China5.Faculty of Earth Sciences,China University of Geosciences,Wuhan430074,China
New non-linear theory and methods of multifractal singularity are applied to map weak anomalies related to deeply buried ores and mineralization halos.The main contents of singularity theory and methodology include three main principles and models: local singularity analysis(for example Δ-analysis) for enhancing weak anomalies caused by buried ores,generalized self-similarity analysis(for example C-A and S-A models) for anomaly decomposition and for anomaly and background separation,and fractal spectrum analysis(for example mapping posterior probability) for characterizing spatial distribution of singularities and anomalies.This paper uses the local singularity analysis to map the anomalies not only in the eastern area where known mineral deposits are found but also in the western area where few mineral deposits have been found.It also uses the generalized self-similarity analysis method S-A model in integration of the principle component analysis in separating element association anomalies in both eastern and western areas.The results show that the eastern and western areas depict significant background difference and the local anomalies obtained using both local singularity model and S-A model show generalized self-similarity in eastern and western areas.Several target areas are delineated on the basis of these local anomalies.
【Fund】： 国家杰出青年科学研究基金项目(No.40525009);; 国家自然科学基金重点项目(No.40638041);; 国家863项目(No.2006AA06Z115);; 教育部创新团队基金(No.IRT0755);; 地质调查项目(No.121201063390110);; 云南锡业集团省校合作项目;; 地质过程与矿产资源国家重点实验室科技部专项经费资助
【CateGory Index】： P612
【CateGory Index】： P612