川西江浪穹隆变质杂岩(李伍岩群)原岩及大地构造环境初探  

Jianglang Metamorphic Core Complex as Protolith of the Liwu Rock Group and Its Geotectonic Setting,West Sichuan

作　　者：杨昌银[1] 田竞亚 宋宗贵[1] 

机构地区：[1]四川省地矿局四O四地质队,四川西昌615000

出　　处：《四川地质学报》2014年第2期170-173,178,共5页Acta Geologica Sichuan

摘　　要：李伍铜锌矿产于江浪变质(核)杂岩内[1],含矿岩系(李伍岩群)变质程度较高,已达绿片岩—角闪岩相,属中压变质相系,原岩恢复比较困难。分析认为李伍岩群原岩建造应归入火山—沉积岩建造,产于扬子陆台西缘元古代裂谷系的一个分支裂谷带中(已消亡)。The Liwu Zn-Cu deposit is confined to the Jianglang metamorphic core complex, and the Liwu Rock Group as ore-bearing rock series is characterized by metamorphic degree of high greenschist facies to low-amphibolite facies. Study indicates that the original rock from which the Liwu Rock Group was derived is a volcanic-sedimentary formation in a rift zone on the western margin of the Yangtze platform.

关 键 词：穹隆体 变质杂岩 原岩建造 江浪 李伍 

分 类 号：P545[天文地球—构造地质学]