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地质力学学报:2014,20(1):1-15
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基于证据权重法的海南岛金多金属矿成矿预测研究
(1.中国科学院广州地球化学研究所矿物学与成矿学重点实验室, 广州 510640;2.中国科学院大学地球科学学院, 北京 100049;3.中国地质科学院地质力学研究所, 北京 100081;4.海南省地质调查院, 海口 570206)
STUDY ON METALLOGENIC PROGNOSIS FOR GOLD POLYMETALLIC DEPOSITS IN HAINAN ISLAND BASED ON EVIDENCE WEIGHTING METHOD
(1.Key Laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, CAS, Guangzhou 510640, China;2.College of Earth Science, University of Chinese Academy of Sciences, Beijing 100049, China;3.Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China;4.Hainan Geological Survey Institute, Haikou 570206, China)
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投稿时间:2013-09-28    
中文摘要: 在系统总结海南岛金多金属矿区域成矿规律的基础上,分析并提取了包括地层、构造、岩浆岩、航磁、化探、遥感等多元有利找矿证据因子,建立了海南岛金多金属矿证据权重预测模型,并采用MRAS软件证据权重模块对研究区进行2 km×2 km的网格单元划分及后验概率计算。根据网格单元后验概率计算值大小及地质矿产空间分布特征,将研究区分三级进行了成矿远景区圈定:A级成矿远景区3个,B级成矿远景区4个、C级成矿远景区24个。研究结果表明,90%的已知矿床(点)位于成矿远景区,显示了良好的预测效果,其结果为该区的找矿工作提供了重要的科学依据。
Abstract:Based on systematical analysis of regional metallogenic regularity of gold polymetallic deposits in Hainan Island, multivariate favorable geological evidences such as strata, structure, magmatic rock, aeromagnetic, geochemical exploration, and remote sensing data were analyzed and extracted. With the help of MRAS, the authors established an evidence weight prediction model for gold polymetallic deposits in this area. The study area was divided into 2 km×2 km grid units at first and then the posterior probability of every grid unit was calculated. According to the magnitude of evidence weight and the distribution characteristics of mineral resources, the study area was classified into 3 A-level prospective targets, 4 B-level prospective targets and 24 C-level prospective targets. Research results showed that about 90% deposits were located in metallogenic prospective area showing a good prediction effect, which provided an important scientific basis for prospecting work in this region.
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基金项目:国家找矿突破行动计划专项(1212011220710)
引用文本:
吴传军,许德如,郭涛,等,2014.基于证据权重法的海南岛金多金属矿成矿预测研究[J].地质力学学报,20(1):1-15.DOI:
WU Chuan-jun,XU De-ru,GUO Tao,et al,2014.STUDY ON METALLOGENIC PROGNOSIS FOR GOLD POLYMETALLIC DEPOSITS IN HAINAN ISLAND BASED ON EVIDENCE WEIGHTING METHOD[J].Journal of Geomechanics,20(1):1-15.DOI:

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