中蒙边界阿尔泰地区汇水域沉积物69种元素背景值特征  

Characteristics of background values of 69 elements in the catchment sediments of the Altay area across the boundary between China and Mongolia

作　　者：刘汉粮 聂兰仕[1,2,3] Shojin Davaa 王学求[1,2,3] 迟清华 Enkhtaivan Altanbagana LIU Han-Liang;NIE Lan-Shi;Shojin Davaa;WANG Xue-Qiu;CHI Qing-Hua;Enkhtaivan Altanbagana(Key Laboratory of Geochemical Exploration,Ministry of Natural Resources,Langfang 065000,China;Institute of Geophysical and Geochemical Ex-ploration,Chinese Academy of Geological Sciences,Langfang 065000,China;UNESCO International Centre on Global-scale Geochemistry,Langfang 065000,China;Geological Investigation Center,Mongolia,Ulaanbaatar-37 P.box-318;School of the Earth Sciences and Resources,China University of Geosciences(Beijing),Beijing 100083,China)

机构地区：[1]自然资源部地球化学探测重点实验室,河北廊坊065000 [2]中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000 [3]联合国教科文组织全球尺度地球化学国际研究中心,河北廊坊065000 [4]Geological Investigation Center,Ulaanbaatar-37 P.box-318,Mongolia [5]中国地质大学(北京),地球科学与资源学院,北京100083

出　　处：《物探与化探》2019年第6期1163-1172,共10页Geophysical and Geochemical Exploration

基　　金：国家重点研发计划项目(2016YFC0600600);中国地质调查局地质调查项目(DD20160116,DD20190451)

摘　　要：阿尔泰地区是重要的稀有金属、有色金属、宝石和工业白云母成矿带。以中蒙边界1∶100万地球化学填图数据为基础,采用原始数据以X±3S为临界值一次性剔除异点后的数据集的中位值作为背景值的估计值,计算了中蒙边界阿尔泰地区及6个大地构造单元的69种元素汇水域沉积物背景值,并探讨其区域分布规律和特征。研究表明,不同的大地构造单元由于不同的地质背景导致元素的地球化学分布模式也不同。这些背景值为进一步深入开发利用中蒙边界地球化学填图数据提供了可供对比的基础数据。The Altay area is an important rare metal,non?ferrous metal,gemstone and industrial muscovite metallogenic belt.Based on the 1︰1000000 geochemical mapping data across the boundary between China and Mongolia,the authors calculated background val?ues of 69 elements in the catchment sediments.The median values of the dataset after disposable eliminating outliers from the original dataset with X±3S as the critical values were used as estimated values of the geochemical background values.The results show that the geochemical distribution of elements in different geotectonic units is different due to different geological backgrounds.These background values can be used as basic data for comparison for further development and utilization of geochemical mapping data across the boundary between China and Mongolia.

关 键 词：69种元素背景值 汇水域沉积物 阿尔泰地区 中蒙边界 

分 类 号：P596[天文地球—地球化学] P632[天文地球—地质学]