奇异性理论在达来庙草原覆盖区找矿弱信息提取中的应用  

Application of singularity theory in weak information extraction for ore prospecting in the Dalaimiao grassland-covered area

作　　者：王佳营 刘行 薛生升[3] 张晓军[4] 张祺 李光耀 谢瑜 WANG Jia-ying;LIU Xing;XUE Sheng-sheng;ZHANG Xiao-jun;ZHANG Qi;LI Guang-yao;XIE Yu(Tianjin Center,China Geological Survey,Tianjin 300170,China;Key Laboratory of Uranium Geology,China Geological Survey,Tianjin 300170,China;Shanxi Province Geophysical and Geochemical Exploration Institute,Yuncheng,Shanxi 044000;Faculty of Earth Resources,China University of Geosciences,Wuhan 430074,China)

机构地区：[1]中国地质调查局天津地质调查中心,天津300170 [2]中国地质调查局铀矿地质重点实验室,天津300170 [3]山西省地球物理化学勘查院,山西运城044000 [4]中国地质大学资源学院,武汉430074

出　　处：《华北地质》2021年第2期14-24,34,共12页North China Geology

基　　金：中国地质调查局项目“纳米比亚-博茨瓦纳铀矿资源调查(DD20201148)”;“内蒙阿拉善-河套地区区域地质调查(DD20211191)”;河南省自然资源厅科技攻关项目“华北陆块南缘碱性岩型稀有稀土金属富集机理与找矿方向研究(豫财招标采购-2020-165-3)”。

摘　　要：内蒙古达来庙地区是重要的钼多金属矿成矿区,具有优越的成矿地质条件,但第三系、第四系覆盖严重,岩石出露较差,给矿产预测工作带来极大困难。为了更有效的开展钼多金属矿产预测,本文利用奇异性理论和广义自相似理论开展成矿信息的提取和复合信息的分解。对地球物理数据、地球化学数据进行空间主成分分析,进而对隐伏岩体和隐伏地层进行推断解译,初步实现了覆盖层的揭盖,使岩体、地层接触带的提取更加充分和完整;对研究区化探组合异常进行奇异性分析,很好的实现了对覆盖区弱缓异常的提取,为下一步开展矿产预测提供了重要依据。The Dalaimiao area in Inner Mongolia is an important molybdenum polymetallic mineralization area,but the tertiary and quaternary are covered seriously,and the rock outcrop is poor,which brings great difficulties to mineral prediction.In order to predict molybdenum polymetallic minerals more effectively,the singularity theory and generalized self-similarity theory are used to extract metallogenic information and decompose composite information.The spatial principal component analysis of the geophysical and geochemical data is carried out,and then the inference and interpretation of the concealed rock mass and the concealed strata are carried out,which preliminarily realizes the uncovering of the overburden and makes the extraction of the contact zone of the rock mass and strata more complete and complete.The singularity analysis of geochemical combination anomaly in the study area is carried out,and the weak and gentle anomaly in the overburden area is well extracted,which provides an important basis for mineral prediction in the next step.

关 键 词：隐伏岩体 弱缓异常 奇异性理论 钼多金属矿 达来庙 

分 类 号：P618.65[天文地球—矿床学]