Re-Os Geochronology of Porphyry Molybdenum Deposit in South Segment of Da Hinggan Mountains,Northeast China

被引：0
|
作者：
曾庆栋 [1 ]
刘建明 [1 ]
张作伦 [1 ]
机构：
[1] Key Laboratory of Mineral Resources,Institute of Geology and Geophysics,Chinese Academy of Sciences
来源：
Journal of Earth Science | 2010年 / 21卷 / 04期
基金：
中国国家自然科学基金;
关键词：
molybdenite; Re-Os dating; south segment of Da Hinggan Mountains; Northeast China;
D O I：
暂无
中图分类号：
P618.65 [钼];
学科分类号：
0709 ; 081803 ;
摘要：
The ages for porphyry Mo deposits in south segment of Da Hinggan Mountains,Northeast China,are not well known.Five molybdenite samples from the Aolunhua(奥伦花) porphyry Mo deposit,five molybdenite samples from the Yangchang(羊场) porphyry-quartz vein Mo deposit and two molybdenite samples from the Banlashan(半拉山) porphyry Mo deposit were selected for Re-Os dating.Three deposits are spatial-temporally associated with the granite porphyry stock.Re-Os isochron age of 131.2±1.9 Ma was obtained for the Aolunhua porphyry Mo deposit.The Yangchang Mo deposit provides isochron age of 138.5±4.5 Ma for two groups of molybdenite(within porphyry ore and within quartz vein).The Banlashan porphyry Mo deposit provides model ages of 140.5±2.4 and 143±2.2 Ma.All of these Re-Os ages are consistent presumed Yanshanian ages for granite intrusions,formed in crust thinning setting in Cretaceous in North China.
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收藏
页码：392 / 401
页数：10
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