保山金厂河铜锌铁多金属矿区辉绿岩锆石U-Pb年龄及意义  

ZIRCON U-PB AGE AND ITS SIGNIFICANCE OF DIABASE IN JINCHANGHE COPPER-ZINC-IRON POLYMETALLIC MINING AREA,BAOSHAN,YUNNAN

作　　者：刘仕承 李加斌 王基元[1] 谢俊 LIU Shi-cheng;LI Jia-bin;WANG Ji-yuan;XIE Jun(Yunnan Gold Mining Group Co.Ltd,Kunming 650200)

机构地区：[1]云南黄金矿业集团股份有限公司,云南昆明650200

出　　处：《云南地质》2023年第3期279-286,共8页Yunnan Geology

基　　金：云南地矿集团有限公司“梅文周专家工作室”项目资助。

摘　　要：云南保山金厂河矿区见大量辉绿岩体,其成岩年龄缺乏厘定,与成矿关系不明确。通过对矿区内辉绿岩体LA-ICP-MS原位锆石U-Pb定年得出锆石谐和年龄470.56±0.87Ma,加权平均年龄486.6±4.4Ma,结合前人研究结果及野外观察,初步认为辉绿岩应为多期性岩浆活动的产物。A large number of diabase rocks are exposed in the Jinchanghe mining area in Baoshan,Yunnan.The diagenetic ages of which lacksdetermination,so that their relationship with mineralization is unclear.By in-situ zircon LA-ICP-MS U-Pb dating,we obtained a zircon harmonic age of 470.56±0.87 Ma and a weighted average age of 486.6±4.4 Maof the diabase rocks.Based on previous research results and field observations,these diabase rocks are considered to be products of multiphase magmatic activities.

关 键 词：辉绿岩体 锆石U-PB年龄 金厂河铜锌铁多金属矿区 云南保山 

分 类 号：P597.3[天文地球—地球化学]