摘要
吉如斑岩铜矿是在1989～1991年开展1∶50万日喀则幅区域化探成果图上发现了“弱小”铜异常,后来通过对原始化探数据进行重新处理及成矿背景、成矿环境分析发现的斑岩铜矿床。这是一个“弱小”异常找矿的范例。作者在首次系统介绍了该矿床特征、发现过程及勘查新进展的同时,客观展示了异常筛选及成矿预测研究的思考过程,对于启迪人们对中国数以千万计的化探数据进行二次开发,从原有的大量异常、特别是“弱小”异常中筛选出最可能与矿化有关的异常,并提高查证的见矿比率等方面具重要的借鉴意义。
The Jiru deposit is a large-size porphyry copper deposit which was discovered by reprocessing the initial geochemical data and analyzing the ore-forming background. At first, the place only showed a “small and dim” geochemical anomaly, andhence it was ignored and even not numbered in the l ： 500,000 Regional Geochemical Ex- ploration Map of Xigaze. The discovery of this deposit is a typical example of using “small and dim” anomalies in mineral exploration. In addition to describing the characteristics, discovering process and new prospecting advances of this deposit, this paper deals with the train of thought about the filtering of thousands of anomalies and the analysis of the ore-forming potential. All the achievements are of great reference significance in re-using abundant geochemical data in China and discovering valuable anomalies related to deposits from numerous anoma- lies, especially from “small and dim” anomalies.
出处
《矿床地质》
CAS
CSCD
北大核心
2007年第3期317-321,共5页
Mineral Deposits
基金
国家"新一轮国土资源大调查"重大项目(No.200210200001)
"973"预研究项目(2005CCA05600)
国家重大基础研究计划"973"项目(2002CB412610)联合资助
关键词
地球化学
斑岩铜矿
化探异常
吉如
冈底斯
geochemistry, porphyry copper deposit, geochemical anomaly, Jiru, Gangdese
