摘要
元谋变质核杂岩构造系统由核部杂岩、拆离断层下盘韧性剪切带、拆离断层以及上盘拆离滑脱系四大部分构成。研究表明:核部杂岩控制了本区与基性 超基岩、花岗岩有关的Cu,Pt,Pb,W,Mo及稀土等矿床;韧性剪切带与后期浅表部的脆性断层控制了本区Au,Cu等矿产的产出;主折离断层、次级折离断层与后期浅表部的脆性断层构成一个集导矿、储矿为一体的构造系统,共同控制了折离滑脱系中Pb,Cu,铂铜镍、赤(磁)铁矿及部分非金属矿的产出。本文结合Lister的混合流体模式,简述元谋变质核杂岩的成矿机理,指出本区矿产勘查远景及方向。
The metamorphic core complex structural system in Yuanmou of Yunnan Province is formed by 4 parts,ie,the metamorphic core complex;the ductile shear zone under the detachment fault;the detachment fault and the detachment system above it.According to this study,the core complex controls the rare metal(Cu,Pt,Pd,W,Mo)and REE deposits related to the maficultramafic rock and granite in this area,the ductile shear zone and the postshearing surfacial brittle fault control the Au and Cu deposits;the major and minor detachment faults and the surfacial brittle fault form a transfer and storing structural system and control the PtCuNi maghemite and part of nonmetals deposits in the detachment system.In this paper,according to the Listers model of mixture fluid,we describe the metallogenesis of Yuanmou metamorphic core complex and point out the prospecting potentiality and direction in this area.
出处
《云南地质》
2003年第1期107-115,共9页
Yunnan Geology
关键词
变质核杂岩
控岩矿作用
元谋
云南
Metamorphic Core Complex
Ore-controlling Role
Yuanmou,Yunnan