摘要
本文基于热年代学理论,利用锆石和磷灰石裂变径迹测年数据及对磷灰石热史的模拟,分析探讨金川铜镍矿床在中新生代的抬升冷却过程,认为金川超基性岩体自中生代以来一直处于持续的冷却抬升阶段,且在中侏罗世和晚白垩世早期经历了两期快速的抬升冷却事件,推断此事件与青藏高原后期活动时间相对应,证明金川岩体受到该事件的远程效应波及,致使该矿床遭受了一定的改造。
Based on the theory of Thermochronology, the use of zircon and apatite fission track dating of apatite thermal history data and simulation, analysis to explore the deposit in the Mesozoic uplift cooling process. Through the apatite fission track length, apatite and zircon and apatite stone paths thermal analysis simulation traces the history of the age, come Jinchuan intrusion since the Mesozoic uplift has been in continuous cooling stage and inferred Jinchuan in the middle Jurassic and Late Cretaceous rock has experienced two-stage rapid uplift cooling event, infer that it is related to the activity of Altyn Tagh fault, which causing the deposit to suffer a certain transformation.
作者
田向盛
杨婧
刘东晓
第鹏飞
TIAN Xiang-sheng YANG Jing LIU Dong-xiao DI Peng-fei(No.3 Geology and Mineral Exploration Team, Gansu Provincial Bureau of Geology and Mineral Exploration and Development, Lanzhou 730050, China The West Key Laboratory of Mineral Resource in Gansu Province, School of Geological Sciences and Mineral Resources of Lanzhou University, Lanzhou 730000, China Gansu Assessment Center of Mineral Resources Reserves, Lanzhou 730000, China)
出处
《甘肃地质》
2016年第2期50-55,75,共7页
Gansu Geology
关键词
金川铜镍矿床
锆石
磷灰石
裂变径迹
抬升冷却
Jinchuan copper-nickel sulfide deposits
zircon
phosphorite
fission track
lifting and cooling
