U-Pb dating of zircon from the Linong granodiorite, Re-Os dating of molybdenite from the ore body and their geological significances in Yangla copper deposit, Yunnan

被引：0
|
作者：
Yang XiAn [1 ]
Liu JiaJun [1 ]
Han SiYu [1 ]
Zhang HongYu [1 ]
Luo Cheng [2 ]
Wang Huan [1 ]
Chen SiYao [1 ]
机构：
[1] China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China
[2] Yunnan Diqing Min Ind Grp, Deqin 674507, Peoples R China
来源：
ACTA PETROLOGICA SINICA | 2011年 / 27卷 / 09期
关键词：
Granodiorite; LA-ICP-MS zircon U-Pb dating; Re-Os dating; Yangla copper deposit; Yunnan Province;
D O I：
暂无
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
The Yangla copper deposit, situated in the middle section of Jinshajiang joint belt between Zhongza-Zhongdian plate and Changdu-Simao plate, is a representative and giant copper deposit that has been discovered in Jinshajiang-Lancangjiang-Nujiang region in recent years. There are coupled relationship between Linong granodiorite and copper mineralization in the Yangla copper deposit. LA-ICP-MS zircon U-Pb dating has revealed that the ages of two samples from the Linong granodiorites are 234. 1 +/- 1. 2Ma (MSWD = 0. 66) and 235. 6 +/- 1. 2Ma (MSWD = 0.66), respectively. Molybdenite Re-Os model age for the KT2 ore body in Linong ore block is 230. 9 +/- 3. 2Ma. The former represents the diagenetic age of the Linong granodiorite, the latter represents the metallogenic age of the Yangla copper deposit, the result shows that the metallogenic age is close to diagenetic age, but a little later. It is the significance for finding out genetic type of the Yangla copper deposit and prospecting.
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页码：2567 / 2576
页数：10
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