【引用本文】 刘国仁, 李彦, 王蕊, 等. 新疆额尔齐斯构造带哲兰德金矿白云母40Ar/39Ar同位素年龄及地质意义[J]. 岩矿测试, 2018, 37(6): 705-712. doi: 10.15898/j.cnki.11-2131/td.201707130118
LIU Guo-ren , LI Yan , WANG Rui , et al. 40Ar/39Ar Dating of Muscovite from the Zhelande Au Deposit, Irtysh Tectonic Zone, Xinjiang and Its Geological Implications[J]. Rock and Mineral Analysis, 2018, 37(6): 705-712. doi: 10.15898/j.cnki.11-2131/td.201707130118

新疆额尔齐斯构造带哲兰德金矿白云母40Ar/39Ar同位素年龄及地质意义

1. 中国科学院新疆生态与地理研究所, 新疆 乌鲁木齐 830011;

2. 河北省地矿局第七地质大队, 河北 燕郊 065201;

3. 自然资源部成矿作用与资源评价重点实验室, 中国地质科学院矿产资源研究所, 北京 100037;

4. 新疆维吾尔自治区地质矿产研究所, 新疆 乌鲁木齐 830001

收稿日期: 2017-07-13  修回日期: 2018-06-11 

基金项目: 新疆维吾尔自治区天山英才培养工程项目;新疆维吾尔自治区2014年国家高层次人才特殊支持计划项目

作者简介: 刘国仁,博士,教授级高级工程师,从事矿产勘查及成矿预测研究。E-mail:467355307@qq.com。。

40Ar/39Ar Dating of Muscovite from the Zhelande Au Deposit, Irtysh Tectonic Zone, Xinjiang and Its Geological Implications

1. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;

2. No.7 Geological Party of the Hebei Bureau of Geology, Yanjiao 065201, China;

3. Key Laboratory of Metallogeny and Mineral Assessment, Ministry of National Resources;Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China;

4. Xinjiang Urgur Autonomous Region Institute of Geology for Mineral Resources, Urumqi 830001, China

Received Date: 2017-07-13
Revised Date: 2018-06-11

摘要:哲兰德金矿是额尔齐斯构造带上重要的造山型金矿,产出于韧性剪切带中,金矿化赋存于黄铁矿化闪长岩脉、含金石英脉和黄铁矿化千枚岩中,矿化与韧脆性剪切变形有关。沿剪切面理发育的白云母、绿泥石等新生矿物,为测定金矿形成时代提供了依据。本研究利用白云母40Ar/39Ar年代学手段,确定了韧性剪切带的形成时代和金成矿时代。结果表明白云母坪年龄为295.4±1.6 Ma,韧性剪切变形和金成矿作用发生在295 Ma,略早于多拉纳萨依金矿形成时间。结合前人资料认为,新疆额尔齐斯构造带造山型金矿形成于295~270 Ma。

关键词: 地质特征, 40Ar-39Ar年龄, 造山型金矿, 哲兰德, 额尔齐斯构造带

40Ar/39Ar Dating of Muscovite from the Zhelande Au Deposit, Irtysh Tectonic Zone, Xinjiang and Its Geological Implications

KEY WORDS: geological characteristics, Ar-Ar age, orogenic gold deposit, Zhelande, Irtysh tectonic zone

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新疆额尔齐斯构造带哲兰德金矿白云母40Ar/39Ar同位素年龄及地质意义

刘国仁, 李彦, 王蕊, 王海培, 杨成栋, 陈琦, 祁世军