%0 Journal Article %T 兰坪盆地西缘沉积岩容矿脉状Cu-Ag-Pb-Zn多金属矿床成矿时代 %A 张锦让 %A 温汉捷 %A 裘愉卓 %A 邹志超 %J 高校地质学报 %D 2016 %X 兰坪盆地是中国著名的三江构造-成矿带的重要组成部分。兰坪盆地西缘发育大量沉积岩容矿脉状Cu-Ag-Pb-Zn多 金属矿床,矿体的分布受一个逆冲推覆构造控制。逆冲推覆构造的根部带主要发育脉状Cu-Ag(Mo) 矿床(包括金满 Cu-Ag、连城Cu-Mo及一系列脉状Cu矿床);前锋带主要发育Pb-Zn-Ag(±Cu) 矿床(包括白秧坪Pb-Zn-Ag-Cu多金属矿 集区及一系列小型的Pb-Zn矿床)。为了探讨兰坪盆地西缘脉状Cu-Ag-Pb-Zn多金属矿床成矿时代,该文在系统总结前人年 代学数据的基础上,补充进行了金满Cu矿床与黄铜矿密切共生的方解石的Sm-Nd法和连城Cu-Mo矿床成矿早阶段辉钼矿 的Re-Os法测年。金满Cu矿床方解石Sm-Nd等时线年龄为58±5 Ma,连城Cu-Mo矿床Re-Os年龄为48±2 Ma,结合前人的资 料表明:(1) 根部带Cu矿床主成矿时代为56~48 Ma,对应于印度—亚洲大陆碰撞造山主碰撞阶段,后期(47~35 Ma) 很可 能存在一期Cu-Ag(Mo) 的叠加或改造成矿作用;(2) 前锋带Pb-Zn-Ag(±Cu) 多金属矿床的成矿作用主要发生在31~29 Ma 左右,对应于印度—亚洲大陆碰撞造山的晚碰撞构造转换期。</br>The Lanping basin is a significant Pb-Zn-Cu-Ag mineralization belt of the Sanjiang Tethyan metallogenic province in China. A series of sediments-hosted Himalayan Cu-Ag-Pb-Zn polymetallic deposits have been discovered in the western part of the basin, which are controlled by a thrust-nappe system. In the thrust-nappe system, the Cu orebodies occur as vein-type deposits in the western and relatively deep part of the mineralization system (the root zone), mainly including the Jinman Cu-Ag deposit, Liancheng Cu-Mo deposit, and more than 30 small vein copper deposits, such as Kedengjian, Huangbai, and Enqi. The Pb-Zn-Ag(± Cu) %K 成矿时代< %K /br> %K 方解石Sm-Nd年龄 %U http://geology.nju.edu.cn/CN/abstract/abstract9767.shtml