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黄金科学技术 ›› 2017, Vol. 25 ›› Issue (4): 1-9.doi: 10.11872/j.issn.1005-2518.2017.04.001

• 矿产勘查与资源评价 •    下一篇

西秦岭中寨—十里铺地区水系沉积物测量找矿效果

陈彩华,孙斌,陈冀,陈力子   

  1. 武警黄金第五支队,陕西  西安   710100
  • 收稿日期:2017-02-22 修回日期:2017-04-22 出版日期:2017-08-30 发布日期:2017-10-30
  • 作者简介:陈彩华(1974-),女,湖北天门人,工程师,从事金矿找矿与成矿预测工作。505282128@qq.com
  • 基金资助:

    中央地质调查基金项目“西北沿边及特殊地区地质矿产调查”二级项目之“甘肃省岷县1∶5万中寨—十里铺幅区域地质矿产调查”子项目(编号:12120114008901)资助。

Prospecting Effect of Stream Sediment Survey in Zhongzhai-Shilipu Area of West Qinling Mountains

CHEN Caihua,SUN Bing,CHEN Ji,CHEN Lizi   

  1. No.5 Gold Geological Party of CAPF,Xi’an   710100,Shaanxi,China
  • Received:2017-02-22 Revised:2017-04-22 Online:2017-08-30 Published:2017-10-30

摘要:

中寨—十里铺地区处于寨上超大型金矿的西部,成矿条件有利。通过在该区开展1/5万水系沉积物测量工作,对区内17种元素的地球化学特征进行了研究,认为中寨—十里铺地区的地层单元是对成矿有利的地球化学块体。运用数理统计方法,分析了成矿元素的相对丰度和相对变异系数特征,以及元素富集程度,指出多金属成矿的有利部位。通过计算成矿元素在不同地层单元中的找矿潜力指数(K×Cv),评价了各地层单元的成矿潜力。通过对研究区内17种元素的R型聚类分析,研究了元素的相关性特征及其空间分布规律,讨论了各元素在空间上的分布特征和组合关系。根据异常的地球化学特征、地层和断裂,优选出4处成矿远景区。在此基础上,开展异常查证,部署工程揭露,发现了3处金锑矿点,取得了良好的找矿效果。

关键词: 水系沉积物测量, 元素相关性特征, 异常元素组合, 成矿潜力, 找矿效果, 中寨&mdash, 十里铺地区, 西秦岭

Abstract:

Zhongzhai-Shilipu area is located in the west of the Zhaishang super-large gold mine area,and its metallogenic conditions are favorable.The 1∶50 000 stream sediment survey is carried out in this area.The geochemical characteristics of 17 elements in this area are studied,which showed that the stratigraphic units of Zhongzhai-Shilipu area are the favorable geochemical blocks.Using the method of mathematical statistics,the relative abundance,relative coefficient of variation and enrichment degree of ore-forming elements were analyzed,and the favorable parts of polymetallic mineralization were pointed out.The metallogenic potential of each stratigraphic unit was evaluated by calculating prospecting potential index(k× Cv) of ore-forming elements in different strata.The correlative character and spatial distribution of elements are studied,the spatial distribution characteristics and combination relations are discussed by R cluster analysis of 17 elements from 3 904 samples in the working area.According to the abnormal geochemical characteristics,strata and fault structure,four mineralization prospects are selected.On the basis of carrying out abnormal verification and deploying the project,three  Au-Sb ore occurrences were found,and achieved good prospecting effect.

Key words: stream sediment survey, element correlation characteristics, anomalous element combination, metallogenic potential, prospecting effect, Zhongzhai-Shilipu area, west Qinling mountains

中图分类号: 

  • P618.51 

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