第24卷第2期 2010年4月
现代地质 GFOSCIENCF
VoL 24No. 2 Apr.2010
因子分析法对内蒙古查巴奇地区水系沉积物
地球化学分区的应用研究
戴慧敏"，鲍庆中，宫传东？，尤洪亮"，孙中任"，闫国磊"，金鑫
(1.沈阳地质矿产研究所，辽宁沈阳110034；2.沈阳有色冶金设计研究院，辽宁沈阳110003）
摘要：利用R型因子分析方法对内蒙占查巴奇地区1:5万水系沉积物数据资料进行分析，提取了具有代表性的8个因子，绘制了因子得分图及地球化学分区图，结巢显示：地球化学分区结果与地质特征对应较好。As、Sb、Cu、Zn组合主要反映了林西组地层，其子区展布方向与林西组地层的NE走向一致，而Pb、Zn子区在光华组英安岩及安山岩、老龙头组变质若和早保罗世英云闪长岩中均有分布，总体量NE向展布；Ag、W子区除在研究区北侧有相对较小面积的分布外，主要分布在研究区南部晚侏罗世二长花岗岩中，表明Ag、W类与该位置的花岗岩体密切相关。通过野外实际调套发现，一个Au矿点及一个Pb、Zn矿点分别位于As、Sb、Cu、Zn子区和Pb、Zn子区内。通过对研究区进行地球
化学分区，明确了各类子区特定的地质地球化学急义及其相互关系，为勘查地球化学方法找矿提供有利信息。关键调：因子分析；水系沉积物；地球化学分区；内蒙古查巴奇地区
中图分类号：P595
文献标志码：A
文章编号：10008527(2010)02024507
Studyof ApplyingFactorAnalysisMethodtotheGeochemicalDivisionin
StreamSedimentsinthe ChabaqiArea of InnerMongolia DAI Hui-min', BAO Qing-zhong', GONG Chuan-dong’,YOU Hong-liang”,
SUN Zhong-ren', YAN Guo-lei', JIN Xin'
(1. Shenyang Institute of Geology and Mineral Resouroes,Shenyang, Lioning110034, China 2. Shenyung Design and Research Institude of Norferrous Metals, Shenyang, Ligoning 110003, China)
Abstract: The authors analyzed the 1: 50,000 stream sediments data in the Chabaqi area of Inner Mongolia with the R-mode factor analysis method, and eight representative factors were extracted from the data. The geochemi-cal divisions have a close relationship with the geological bodies by making a study of the factor score map, the geochemical division map and the geologic map.The element combination of arsenic, stibium, copper and zinc is mainly related to the Linxi Formation, and the distributions of division are in accordance with those of the Linxi Formation. The lead and zinc divisions are mainly distributed in the andesite and dacite of the Guanghua Formation, metamorphic rocks of the Laolongtou Formation, and tonalite of Early Jurassic, they are mainly dis-tributed in the NE direction. Besides smaller divisions are distributed in the north of the study area, divisions of silver and tungsten are mainly distributed in the Late Jurassic adamellite of the south study area, and the distri-butions show that elements of silver and tungsten have closed relation to the granite body. A gold ore occurrence was found in the arsenic, stibium, copper and zinc divisions, and a lead-zinc ore occurrence is located in the lead and zinc divisions during field practical investigation. By the study of geochemical division, we have known the geological-geochemical implications and their reciprocal relationships, The research method can provide some significant information for the geological survey
收稿日期：2009-04-26；改回日期：2009-12-28；责任编辑：楼亚儿。
基金项目：中国地质调查局项日"内蒙占查巴奇地区矿产选款调查"（矿调【2004］10-2号）。
作者简介：截慧敏，女，工程师，硕士，1979年出生，地球化学专业，主要从事地球化学的研究工作。
Email: dhm2004_ 1977@ yahoa. com. cn,