Yang X.,China University of Geoscicnces |
Liu J.,China University of Geoscicnces |
Han S.,China University of Geoscicnces |
Zhang H.,China University of Geoscicnces |
And 3 more authors.
Acta Petrologica Sinica | Year: 2011
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-SB 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.