| 大兴安岭太平沟钼矿床成矿年代学研究 |
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| 引用本文： | 王圣文,王建国,张达,祁小军,吴淦国,赵丕忠,杨宗锋,刘彦兵.大兴安岭太平沟钼矿床成矿年代学研究[J].岩石学报,2009,25(11):2913-2923. |
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| 作者姓名： | 王圣文 王建国 张达 祁小军 吴淦国 赵丕忠 杨宗锋 刘彦兵 |
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| 作者单位： | 1. 中国地质大学,地质过程与矿产资源国家重点实验室,北京,100083
2. 北京建龙国基投资有限公司,北京,100600 |
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| 基金项目： | 国家重点基础研究发展规划项目，内蒙古太平沟铜钼矿勘查项目，高等学校学科创新引智计划 |
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| 摘 要： | 太平沟钼矿床为大兴安岭地区新发现的斑岩型钼矿床.本文的同位素地质年代学研究获得获得含矿的蚀变二长花岗斑岩的钾长石~(40)Ar-~(39)Ar等时线年龄为127.5±4Ma,花岗斑岩锆石SHRIMP U-Pb年龄为131.5±1.1Ma,矿体辉钼矿Re-Os等时线年龄为129.4±3.9Ma,表明斑岩成矿系统形成于131.5～127.5Ma,与早白垩世区域性燕山期大规模构造-岩浆事件一致.
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| 关 键 词： | 大兴安岭 太平沟斑岩型钼矿 ~(44)Ar-~(39)Ar年龄 锆石SHRIMPU-Pb年龄 Re-Os年龄 |
Geochronological study on Taipinggou molybdenum deposit in Da Hinggan Mountain |
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| WANG ShengWen,WANG JianGuo,ZHANG Da,QI XiaoJun,WU GanGuo,ZHAO PiZhong,YANG ZongFeng,LIU YanBing.Geochronological study on Taipinggou molybdenum deposit in Da Hinggan Mountain[J].Acta Petrologica Sinica,2009,25(11):2913-2923. |
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| Authors: | WANG ShengWen WANG JianGuo ZHANG Da QI XiaoJun WU GanGuo ZHAO PiZhong YANG ZongFeng LIU YanBing |
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| Abstract: | The Taipinggou porphyry molybdenum deposit was recently discovered in the Da Hinggan Mountain,China.Our geochronological study of ore-bearing porphyries and orebodies yields a K-feldspar ~(40) Ar-~(39) Ar isochron age of 127.5±4Ma for the ore-bearing,altered adamellite porphyry,a SHRIMP zircon U-Pb age of 131.5±1.1Ma for the ore-bearing granite porphyry,and a molybdeniteRe-Os isoehron age of 129.4±3.9Ma for the orebodies.This suggests that the molybdenum mineralization occurred in a period of 131.5～127.5Ma;and that the porphyries and ore systems formed coevally with the regional Yanshanian tectonomagmatic event in Early Cretaceous. |
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| Keywords: | Da Hinggan Mountain Taipinggou porphyry molybdenum deposit ~(40)Ar-~(39)Ar age Zircon SHRIMP U-Pb age Re-Os age |
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