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川西丹巴美河石英脉型金矿控矿构造研究

发表时间:2008-01-15  浏览量:1869  下载量:528
全部作者: 李元庆,王根厚,万永平
作者单位: 中国地质大学地球科学与资源学院;陕西延长石油集团公司研究院
摘 要: 美河石英脉型金矿位于松潘—甘孜造山带东缘,主要控矿构造为断裂构造和褶皱构造。研究区的构造格架以北西向断裂为主,并有东西向,北东向断裂与其配套,充分显示构造控矿的层次性和规律性。褶皱构造的轴线北西向延伸,控制着矿脉的形成、分布和空间位置。沿矿脉发育许多次级构造,岩石发生强烈变形,普遍发育劈理化带。北西向的东谷断裂和五号闸断裂是主要的导矿构造。容矿构造以北西、北东、北北东向(近南北向)的透镜状的张性断裂为主。容矿空间主要发育在褶皱的轴部虚脱的位置、压扭性断裂的交汇处以及挤压剪切所形成的破裂构造中。
关 键 词: 控矿构造;美河石英脉型金矿;赤平投影;丹巴;东谷断裂
Title: A study on ore-control structures of the Meihe Quartz-vein-type Gold Deposits, Danba, West Sichuan
Author: LI Yuanqing,WANG Genhou, WAN Yongping
Organization: School of Earth Sciences and Resources, China University of Geosciences;Institute of Shaanxi Yanchang Petroleum group Corporation
Abstract: Meihe Quartz-vein-type Gold Deposits in the eastern margin of Songpan GarzeˆOrogenic Belt, the tectonic faults and folds are main ore-control structures. The study area north of the West tectonic framework to fracture, and there are things to the East-West, North-East to fracture their support, fully demonstrating the level of ore-control structures and regularity. Fold axis to the extension of the North-West, control the formation of the veins, distribution and spatial location. There are many sub-structure, strongly deformed rocks and cleavage belt along the vein .The faults extending to NW ,Dongku fault and Wuhaozha fault , are the main ore-leading structures and the ascendent orientation of the ore-bearing structures are NW, NE, NNE(near SN) lentoid-open fracture . Host fold in the space of the main shaft of the collapse of the location of pressure shear and compression fracture junctions formed by shear rupture in the structure.
Key words: ore-structure; Meihe Quartz-vein-type Gold Deposits; polar stereographic projection; Danba; Dongku fault
发表期数: 2008年5月第1期
引用格式: 李元庆,王根厚,万永平. 川西丹巴美河石英脉型金矿控矿构造研究[J]. 中国科技论文在线精品论文,2008,1(1):85-90.
 
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