摘要
船肚钼矿床是近期在大宝山矿区内发现的大型矽卡岩型钼矿床,对辉钼矿样品进行了Re-Os同位素分析,获得辉钼矿Re-Os同位素模式年龄范围为(163.3±2.5)Ma^(165.2±2.3)Ma,等时线年龄为(165.8±9.2)Ma(MSWD=0.80),表明其形成于中侏罗世,与大宝山石英脉型辉钼矿年龄相一致,同属华南中生代大规模成矿作用的第一成矿阶段(170~150 Ma),是华南中生代大规模岩石圈伸展—减薄背景下的产物。
Chuangdu Mo deposit is a large-scale skarn type deposit discovered recently in the Dabaoshan mining area. Re-Os isotopic composition is analyzed for the molybdenite samples. The Re-Os isotopic model age of molybdenite is in the range of （163.3±2.5）Ma to（165.2±2.3） Ma,and the isochron age is （165.8±9.2） Ma （MSWDU 0.80） , which indicates that the molybdenite was formed in the Middle Jurassic, which is consistent with the age of the Dabaoshan molybdenite deposit of quartz vein type. They both belonged to the first stage（17O-150 Ma） of large-scale Yanshanian molybdenum metallogenic period in Mesozoic Era. The dynamic background is related to the Mesozoic lithosphere extension-thinning events in South China.
作者
潘会彬
康志强
曹艳超
PAN Huibin;KANG Zhiqiang;CAO Yanchao(Exploration Unit of North China Geological Exploration Bureau,Lang fang 065000,Hebei,China;College of Earth Sciences,Guilin University of Technology,Guilin 541006,Guangxi iChina;No.701 Geological Team of Heilongjiang Non-ferrus Metals Geological Exploration Bureau,Harbin 150028,Heilongjiang,China)
出处
《矿产与地质》
2018年第1期27-30,38,共5页
Mineral Resources and Geology
基金
广西八桂学者项目(2013许继峰)
广西矿冶与环境科学实验中心资助项目(KH2011ZD002)
广西教育厅项目(201010LX170)
广西自然科学基金项目(2012GXNSFBA053132)联合资助
关键词
船肚钼矿
辉钼矿
Re-0s同位素测年
大宝山矿区
粤北
Chuangdu Mo deposit
molybdenite
Re-Os isotopic dating
Dabaoshan ore-field
North Guangdong
