金川铜镍矿床中新生代抬升冷却过程:来自裂变径迹的证据  

MESOZOIC-CENOZOIC LIFTING AND COOLING PROCESS OF JINCHUAN COPPER-NICKEL SULFIDE DEPOSIT:THE EVIDENCE FROM FISSION-TRACK METHOD

作　　者：田向盛 杨婧[2] 刘东晓 第鹏飞[2,3] 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)

机构地区：[1]甘肃省地矿局第三地勘院,甘肃兰州730050 [2]兰州大学地质科学与矿产资源学院,甘肃省西部矿产资源重点实验室,甘肃兰州730000 [3]甘肃省矿产资源储量评审中心,甘肃兰州730000

出　　处：《甘肃地质》2016年第2期50-55,75,共7页Gansu Geology

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.

关 键 词：金川铜镍矿床 锆石 磷灰石 裂变径迹 抬升冷却 

分 类 号：P618.41[天文地球—矿床学] P618.63[天文地球—地质学]