DOI:
矿床地质:1996,Vol.>>Issue(1):34-40

东川矿区几个关键构造问题与铜矿远景评估
有色金属总公司矿产地质研究院
Some key structural problems of the Dongchuan ore district and prospective evaluation of copper deposit
()
本文二维码信息
码上扫一扫!

摘要
图/表
参考文献
相似文献

摘要点击次数: 2036   全文下载次数: 2060   点此下载全文
        
中文摘要:本文初步提出了东川大型推覆体的几何结构、烂泥坪黑矿尖子控制特高品位裂隙富矿的层控脉型脆-韧性剪切带及白锡腊矿段的构造推覆模型。根据上述研究结果著者们认为:东川地区具有发展成超大型铜矿的成矿地质条件,因而生产矿山仍有地质找矿潜力。
Abstract:Large- and medium-sized copper deposits such as Yinmin, Luoxue, Lanniping and Tangdan are in "Z"-shaped distribution in the Dongchuan copper ore district. They occur in Yinmin Formation and Luoxue Formation on the hanging wall of Dongchuan nappe. "Yinmin breccia" at the bottom of Yinmin Formation is a kind of complex tectonite formed by bedding decollement and stripping of Dongchuan nappe, rather than being volcanogene sedimentary breccia or syngenetic breccia. Based on the above viewpoint, the present paper has put forward new ideas on the copper prospects and ore-hunting targets in the Dongchuan copper district. The genesis of rich fissure ores in the Lanniping copper deposit and the structure in the Baixila deposit are also dealt with in this paper. It is held that the rich fissure ores in the Lanniping copper deposit are controlled by the interlayer brittle-ductile shear zone formed by relative movement of two bedded planes (the upper plane being the boundary between 2nd Member and 3rd Member of the late Sinian Doushantuo Formation, and the lower plane being fault surface between Doushantuo Formation and underlying Proterozoic strata), and that the predicted rich fissure ores assume equidistant en echelon arrangement relative to the known rich fissure ores, lt is also considered that in the Baixila ore deposit the eastern orebody and the western orebody are of different types and hence do not belong to one ore bed, and that the connection of the orebodies of two different beds is attributed to the dislocation of a nearly SN-trending left-lateral strike-slip fault, with the distance of the translational dislocation of the fault being some 180 m.
文章编号:    
中图分类号:     
文献标志码:

引用文本:
汪劲草,尹意求,肖龙.1996.东川矿区几个关键构造问题与铜矿远景评估[J].矿床地质,15(1):34~40
.1996.Some key structural problems of the Dongchuan ore district and prospective evaluation of copper deposit[J].Mineral Deposits15(1):34~40
图/表
您是第241664063位访问者  京ICP备05032737号-5  京公网 安备110102004559
主管单位:中国科学技术协会 主办单位:中国地质学会矿床地质专业委员会 中国地质科学院矿产资源研究所
地  址: 北京市百万庄大街26号 邮编:100037 电话:010-68327284;010-68999546 E-mail: minerald@vip.163.com
本系统由北京勤云科技发展有限公司设计 
手机扫一扫