| 引用本文: | 范小平, 多吉, 温春齐, 郭建慈, 胡先才, 陈惠强, 李小文.西藏马攸木金矿床含金脉石英的40Ar/39Ar快中子活化定年及其地质意义[J].沉积与特提斯地质,2005,25(4):33-36.[点击复制] |
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| 西藏马攸木金矿床含金脉石英的40Ar/39Ar快中子活化定年及其地质意义 |
| 范小平,多吉,温春齐,郭建慈,胡先才,陈惠强,李小文 |
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(1. 西藏地热地质大队, 西藏 拉萨 850032;
2. 西藏自治区地质矿产勘查开发局, 西藏 拉萨 850000;
3. 成都理工大学 地球科学学院, 四川 成都 610059) |
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| 摘要: |
| 西藏马攸木金矿床金矿化晚阶段含金硫锑铅矿脉石英样品40Ar/39Ar快中子活化法坪年龄为22.46±1.20 Ma,坪年龄代表石英的结晶年龄。测试结果表明,马攸木金矿床金的成矿作用可能延续到喜马拉雅中晚期。 |
| 关键词: 40Ar/39Ar法定年 石英 金矿床 马攸木 西藏 |
| DOI： |
| 附件 |
| 投稿时间：2005-06-09 |
| 基金项目:国家自然科学基金项目(40472058)、973项目“印度与亚洲大陆主碰撞成矿带作用”(2002CB412600)下属课题“西藏雅鲁藏布江结合带西段成矿地质背景及金属矿床类型研究”(2002CB412600)、西藏自治区重点科研项目(2004-66)。 |
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| 40Ar/39Ar fast-neutron activation dating and geological significance of quartz from the gold-bearing quartz veins in the Mayum gold deposit,Xizang |
| FAN Xiao-ping, DUO Ji, WEN Chun-qi, GUO Jian-ci, HU Xian-cai, CHEN Hui-qiang, LI Xiao-wen |
(1. Xizang Party of Geothermal Geology, Lhasa 850032, Xizang, China;
2. Xizang Bureau of Geology and Mineral Resources, Lhasa 850000, Xizang, China;
3. Chengdu University of Technology, Chengdu 610059, Sichuan, China) |
| Abstract: |
| The quartz from the gold-bearing quartz veins of boulangerite sample formed during the later stages of gold mineratization in the Mayum gold deposit,Xizang was dated by using the 40Ar/39Ar fast-neutron activation technique,which gave a plateau age of 22.46±1.20 Ma.This plateau age represents the age of quartz（crystallization）.This determination shows that the mineralization of the Mayum gold deposit may be traced back to the middle and late Himalayan. |
| Key words: 40Ar/39Ar dating quartz gold deposit Mayum Xizang |