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《Chinese Journal of Geophysics》 2015-12
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Multi-scale and integrated geophysical data revealing mineral systems and exploring for mineral deposits at depth:A synthesis from SinoProbe-03

L Qing-Tian;DONG Shu-Wen;TANG Jing-Tian;SHI Da-Nian;CHANG Yin-Fu;Institute of Geophysical and Geochemical exploration,Chinese Academy of Geological Sciences;China Deep Exploration Center—SinoProbe Center,Chinese Academy of Geological Sciences;School of Geosciences and Info-physics of Central South University;MLR Key Laboratory of Metallogeny and Mineral Assessment,Institute of Mineral Resources, Chinese Academy of Geological Sciences;Department of Land and mineral Resources of Anhui Province;SinoProbe-03-CJ Group;  
There are two reasons make it essential to explore the deep,one is the need for deepmineral exploration,and the other better understanding the deep dynamic processes that control the formation and distribution of major ore deposits,particularly,in the intra-continental setting.Financed by the SinoProbe(China′s largest national collaborative,multidisciplinary Earth science research project),National Nature Sciences foundation and Chinese Geological Survey,the authors have conducted multi-scale and integrated deep exploration across middle and lower reaches of Yangtze Metallogenic Belt(YMB)and its major ore districts in Eastern China.These data range in scale from terrane and belt,district to camp-scale.The methods included broadband seismic,deep reflection seismic, wide-angle reflection/refraction, magnetotelluric sounding and gravity and magnetic modelling.The results provide first-order insights into physical and structural properties of the lithosphere and upper mantle beneath the YMB.These insights provide geodynamic clues and constraints as to why YMB is so well endowed in metals.The results also provide first-order constraints for the upper crustal structure,composition and fault distribution of major ore districts.Based on these information at depth,the three dimension geological model was constructed,which provides knowledge of the depth extent of subsurface or ore-controlling geologic units(e.g.,faults,strata,and intrusions)that thus leads to a new targeting for deep mineral.Some typical exploration models for"porphyry"iron,porphyry copper and hydrothermal polymetal deposits were summarized through the 3Dintegrated geophysical methods test,and deep potential for exploration was evaluated around the deposits.In term of technical progresses,a series of measures were taken from acquisition parameter design,shooting to receiving.New methods from weak seismic signal extraction,noise suppression,static to pre-stack migration were proposed and tested. Mathematical morphology filtering and other denoising techniques,and 2D/3Dforward and inversion methods considering the influence of the topography and anisotropy were proposed in the magnetotelluric sounding(MT)data processing.
【Fund】: 国家深部探测专项第3项目(SinoProbe-03);; 地质调查项目(1212011220243;1212011220244);; 国家自然科学基金重点项目(40930418)联合资助
【CateGory Index】: P631
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1 LIU Yan1,YAN Jia-Yong1,WU Ming-An2,ZHAO Wen-Guang2,ZHAO Jin-Hua1,DENG Zhen1 1 Institute of Mineral Resources,Chinese Academy of Geological Sciences,MLR Key Laboratory of Metallogeny and Mineral Assessment,Beijing 100037,China 2 Geological Survey of Anhui Province,Hefei 230001,China;Exploring deep concealed ore bodies based on gravity anomaly separation methods: A case study of the Nihe iron deposit[J];Chinese Journal of Geophysics;2012-12
2 Chen Guoxiong;Liu Tianyou;Sun Jinsong;Ou Yang;Liu Shuang;Faculty of Earth Resources,China University of Geosciences;State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences;Institute of Geophysics & Geomatics,China University of Geosciences;;Characteristics of Multi-Scale Gravity Field and Deep Structures in Nanling Metallogenic Belt[J];Earth Science(Journal of China University of Geosciences);2014-02
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6 YUAN Feng;LI Xiaohui;ZHANG Mingming;ZHOU Taofa;GAO Daoming;HONG Dongliang;LIU Xiaomin;WANG Qinian;ZHU Jiangbo;School of Resources and Environmental Engineering,Hefei University of Technology;Integrated Geological Team,East-China Metallurgical Bureau of Geology & Exploration;Geological Exploration Technologies Institute of Anhui Province;;Three Dimension Prospectivity Modelling Based on Integrated Geoinformation for Prediction of Buried Orebodies[J];Acta Geologica Sinica;2014-04
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Chinese Journal Full-text Database 10 Hits
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