| 滇东南富宁地区基性侵入岩及喷出岩时代 |
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| 引用本文： | 刘兵,李小军,关奇,陈棵,陈光艳,李维科,胡绍斌,张虎,俞赛赢. 滇东南富宁地区基性侵入岩及喷出岩时代[J]. 地质通报, 2018, 37(11): 2021-2031 |
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| 作者姓名： | 刘兵 李小军 关奇 陈棵 陈光艳 李维科 胡绍斌 张虎 俞赛赢 |
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| 作者单位： | 云南省地质调查院, 云南 昆明 650216,云南省地质调查院, 云南 昆明 650216,云南省地质调查院, 云南 昆明 650216,云南省地质调查院, 云南 昆明 650216,云南省地质调查院, 云南 昆明 650216,云南省地质调查院, 云南 昆明 650216,云南省地质调查院, 云南 昆明 650216,云南省地质调查院, 云南 昆明 650216,云南省地质调查院, 云南 昆明 650216 |
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| 基金项目： | 中国地质调查局项目《云南1∶5万睦伦街等4幅区域地质矿产调查》（编号：12120114072701）、《云南区域地质调查片区总结与服务产品开发》（编号：DD20160345-02）、《云南1∶5万那佐等4幅区域地质调查》（编号：DD20160020） |
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| 摘 要： | 在滇东南富宁地区基性侵入岩、喷出岩较发育,前人将其划分为"半瓦型"侵入岩、"安定型"侵入岩和"龙康型"喷出岩3类,3类岩石普遍缺乏可靠的同位素年代学资料。在对富宁地区基性侵入岩、喷出岩进行区域地质调查的基础上,应用LAICP-MS技术对其进行锆石U-Pb测年,在半瓦型侵入岩和安定型侵入岩中分别获得了254.0±2.0Ma和244.2±4.4Ma的加权平均年龄,在龙康型喷出岩中获得251.9±3.0Ma和255.92±0.72Ma加权平均年龄。结合野外调查和综合研究,将富宁地区"安定型"侵入岩的时代界定于中三叠世,将"半瓦型"侵入岩和"龙康型"喷出岩的时代界定于晚二叠世。
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| 关 键 词： | 滇东南 富宁地区 基性侵入岩 基性喷出岩 锆石U-Pb年龄 |
| 收稿时间： | 2018-01-07 |
| 修稿时间： | 2018-05-12 |
The age of basic intrusive and extrusive rocks in Funing area, southeast Yunnan Province |
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| LIU Bing,LI Xiaojun,GUAN Qi,CHEN Ke,CHEN Guangyan,LI Weike,HU Shaobin,ZHANG Hu and YU Saiying. The age of basic intrusive and extrusive rocks in Funing area, southeast Yunnan Province[J]. Geologcal Bulletin of China, 2018, 37(11): 2021-2031 |
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| Authors: | LIU Bing LI Xiaojun GUAN Qi CHEN Ke CHEN Guangyan LI Weike HU Shaobin ZHANG Hu YU Saiying |
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| Affiliation: | Yunnan Institute of Geological Survey, Kunming 650216, Yunnan, China,Yunnan Institute of Geological Survey, Kunming 650216, Yunnan, China,Yunnan Institute of Geological Survey, Kunming 650216, Yunnan, China,Yunnan Institute of Geological Survey, Kunming 650216, Yunnan, China,Yunnan Institute of Geological Survey, Kunming 650216, Yunnan, China,Yunnan Institute of Geological Survey, Kunming 650216, Yunnan, China,Yunnan Institute of Geological Survey, Kunming 650216, Yunnan, China,Yunnan Institute of Geological Survey, Kunming 650216, Yunnan, China and Yunnan Institute of Geological Survey, Kunming 650216, Yunnan, China |
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| Abstract: | Basic rocks composed of Banwa-type intrusive rocks, Anding-type intrusive rocks and Longkang-type extrusive rocks are well outcropped in Funing area, southeast Yunnan Province, but they lacked chronological information. Based on regional geological investigation in Funing area, the authors applied LA-ICP-MS tech to determining the U-Pb age of zircons from intrusive and extrusive basic rocks. The weighted averages of 254.0±2.0Ma and 244.2±4.4Ma were obtained from Banwa-type intrusive rocks and Anding-type intrusive rocks respectively, and the weighted averages of 251.9±3.0Ma and 255.92±0.72Ma were obtained from Longkang-type extrusive rocks. Combined with field geological survey and comprehensive research, the authors hold that the age of the Anding-type intrusive rocks should be Middle Triassic, and the age of the Banwa-type intrusive rocks and the Longkang-type extrusive rocks should be Late Permian. |
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| Keywords: | southeast Yunnan Province Funing area basic intrusive rocks basic extrusive rocks zircon U-Pb ages |
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