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| 内蒙古维拉斯托铜锌矿床的白云母Ar/Ar年龄探讨 | |
| 引用本文： | 潘小菲,郭利军,王 硕,薛怀民,侯增谦,童 英,李志明.内蒙古维拉斯托铜锌矿床的白云母Ar/Ar年龄探讨[J].岩石矿物学杂志,2009,28(5):473-479. |
| 作者姓名： | 潘小菲 郭利军 王 硕 薛怀民 侯增谦 童 英 李志明 |
| 作者单位： | 1. 中国地质科学院,地质研究所,北京,100037 2. 内蒙古地质矿产局,内蒙古,呼和浩特,010010 3. 内蒙古地质矿产局,内蒙古,呼和浩特,010010;内蒙古地质勘查有限责任公司,内蒙古,呼和浩特,010020 4. 中国地质环境监测院,北京,100081 |
| 基金项目： | 国家自然科学青年基金资助项目，基本科研业务费资助项目，内蒙古地质勘查有限责任公司科研项目 |
| 摘 要： | 采用显微激光探针法首次测定了维拉斯托铜锌矿床的白云母40Ar-39Ar年龄,结果为133.4±0.8 Ma.根据白云母产出形态,认为测定的白云母与维拉斯托铜锌矿床成矿后期热液活动有关,据此确定维拉斯托矿床的成矿最晚时限为133.4±0.8 Ma.区域地质背景特征显示,维拉斯托矿床在成因上受区域性造山期后岩石圈伸展作用控制,与区域性燕山晚期的岩浆作用关系密切,后者为矿床的形成可能提供了必要的热源和物源. |
| 关 键 词： | 维拉斯托 铜锌矿床 Ar-Ar年龄 成矿年龄 |
Laser microprobe Ar-Ar dating of biotite from the Weilasituo Cu-Zn polymetallic deposit in Inner Mongolia |
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| PAN Xiao-fei,GUO Li-jun,WANG Shuo,XUE Huai-min,HOU Zeng-qian,TONG Ying and LI Zhi-ming.Laser microprobe Ar-Ar dating of biotite from the Weilasituo Cu-Zn polymetallic deposit in Inner Mongolia[J].Acta Petrologica Et Mineralogica,2009,28(5):473-479. | |
| Authors: | PAN Xiao-fei GUO Li-jun WANG Shuo XUE Huai-min HOU Zeng-qian TONG Ying and LI Zhi-ming |
| Institution: | Institute of Geology, CAGS, Beijing 100037, China;Bureau of Geology and Mineral Resources of Inner Mongolia, Hohhot 010010, China;;Bureau of Geology and Mineral Resources of Inner Mongolia, Hohhot 010010, China; Inner Mongolia Geology and Prospecting Co. Ltd. , Hohhot 010020, China;;Institute of Geology, CAGS, Beijing 100037, China;Institute of Geology, CAGS, Beijing 100037, China;Institute of Geology, CAGS, Beijing 100037, China;China Institute of Geo-environment Monitoring, Beijing 100081, China |
| Abstract: | ~(40)Ar-~(39)Ar fast-neutron activation dating of biotite from the Weilasituo Cu-Zn polymetallic deposit in Inner Mongolia was conducted by microprobe. The average age 133.4±0.8 Ma is considered to be the time limit of the last or the late hydrothermal activity in the Weilasituo copper-zinc deposit. According to regional age relationship, the ore deposit seems to have been controlled by regional post-orogenic lithspheric thinning and strongly related to the magmatism of the late Yanshanian granite. The late regional Yanshanian granite might have provided the necessary heat and material resources for the formation of the Weilasituo deposit. |
| Keywords: | Weilasituo copper-zinc deposit Ar-Ar dating ore-forming age |
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