区域化探元素致矿序列在新疆祁漫塔格东段的应用  

THE APPLICATION OF THE MINERALIZATION SEQUENCE OF REGIONAL GEOCHEMICAL ELEMENTS TO THE EASTERN SEGMENT OF QIMANTAG AREA,XINJIANG

作　　者：景宝盛[1] 

机构地区：[1]新疆维吾尔自治区地质矿产勘查开发局地球物理化学探矿大队,新疆昌吉831100

出　　处：《物探与化探》2013年第4期565-572,共8页Geophysical and Geochemical Exploration

基　　金：国土资源大调查项目(200214200007);(200314200003);(1212010781055);新疆自治区中央专项资金项目(200428001029)

摘　　要：区域化探元素致矿序列是通过数理统计的手段,对区域化探样品各元素测试数据的变化系数、样本数、偏度、浓集系数及最低浓集系数等参数进行统计,并以公式定量化的形式得出致矿系数,从而厘定区域化探致矿序列。通过致矿序列的确定,发现在祁漫塔格东段,W、Au、Bi、Sn、Pb、F、Ag、Cd等为该区的主要成矿元素(指示元素);长城系小庙岩组及印支期侵入岩为W、Sn等的主要找矿靶区;印支期侵入岩与蓟县系、白沙河组、石炭—二叠系等含碳酸盐岩地层的接触部位为Cu、Pb、Zn、Fe等多金属矿产的主要成矿区;Au的主要成矿区则分布在该区中西部的祁漫塔格群地层中,成矿类型应为与白干湖断裂及其次级断裂有关的破碎蚀变岩型。根据区内成矿地质条件及化探组合异常特征,对主要成矿元素的找矿靶区进行了划分。The mineralization sequence of regional geochemical elements lies in the statistic analysis of such parameters of element ana- lytical data from regional geochemical samples as variation coefficients, sample number, deviations, concentration coefficients and min- imum concentration coefficients by means of mathematical statistics to obtain the mineralization coefficients in the form of formula quan- tification, thus determining regional geochemical mineralization sequence. Based on the determination of the mineralization sequence, the author has found that W, Au, Bi, Sn, Pb, F, Ag and Cd constitute the major ore-forming elements （indicator elements） in the eastern segment of Qimantag area, that the Xiaomiao rock formation of Changcheng System and the Indosinian intrusive rocks are major ore-prospecting target areas, that the contact zones between the Indosinian intrusive rocks and carbonate rock-bearing strata of Jixian System, Baishahe Formation, and Carboniferous-Permian rocks are major ore-forming districts of Cu, Pb, Zn, Fe polymetallic ore re- sources, that Au metallogenic areas are mainly distributed in strata of Qimantag Group in central and western parts of the study area, and that the mineralization should belong to the shattered alteration rock type related to Baiganhu fault and its secondary faults. Based on regional ore - forming geological conditions and geochemical composite anomalies, the authors indicate the ore-prospecting target ar- eas of the major ore-forming elements.

关 键 词：区域化探 致矿序列 成矿元素 找矿靶区 新疆祁漫塔格 

分 类 号：P632[天文地球—地质矿产勘探]