| 新疆西准噶尔卡拉岗组火山岩40Ar-39Ar年龄 |
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| 引用本文： | 谭绿贵,周涛发,袁峰,范裕,岳书仓.新疆西准噶尔卡拉岗组火山岩40Ar-39Ar年龄[J].地质科学,2007,42(3):579-586. |
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| 作者姓名： | 谭绿贵 周涛发 袁峰 范裕 岳书仓 |
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| 作者单位： | 1. 皖西学院城市建设与环境系, 安徽六安, 237012;2. 合肥工业大学资源与环境工程学院, 合肥, 230009 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，安徽省优秀青年科技基金 |
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| 摘 要： | 对新疆西准噶尔盆地萨吾尔地区卡拉岗组3个火山岩样品(英安岩、玄武岩和流纹岩)进行了40Ar-39Ar精确测年,获得英安岩坪年龄为283±2Ma(2σ),玄武岩加权平均年龄为281.2±3.0Ma(2σ),流纹岩坪年龄为280±2Ma(2σ),因此确定该组火山岩形成于距今283～280Ma,为早二叠世亚丁斯克期火山活动的产物。
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| 关 键 词： | 40Ar-39Ar年龄 早二叠世 火山岩 新疆西准噶尔 |
| 文章编号： | 0563-5020（2007）03-0579-08 |
| 收稿时间： | 2006-05-16 |
| 修稿时间： | 2006-05-162006-07-06 |
40Ar-39Ar AGE OF THE KALAGANG FORMATION VOLCANIC ROCKS IN WESTERN JUNGGAR, XINJIANG |
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| Tan Lugui,Zhou Taofa,Yuan Feng,Fan Yu,Yue Shucang.40Ar-39Ar AGE OF THE KALAGANG FORMATION VOLCANIC ROCKS IN WESTERN JUNGGAR, XINJIANG[J].Chinese Journal of Geology,2007,42(3):579-586. |
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| Authors: | Tan Lugui Zhou Taofa Yuan Feng Fan Yu Yue Shucang |
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| Institution: | 1. Department of Urban Construction and Environment Science, West Anhui University, Liu’an, Anhui 237012;2. College of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009 |
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| Abstract: | The dating of three samples from the Kalagang Formation volcanic rocks in Sawuper region,western Junggar,Xinjiang,yielded an 40Ar-39Ar plateau age 283±2 Ma(2σ,dacite),40Ar-39Ar weighted mean age 281.2±3.0 Ma(2σ,basalt),and 40Ar-39Ar plateau age 280±2 Ma(2σ,rhyolite),respectively.The 40Ar-39Ar chronology indicated that the volcanic rocks erupted 283~280 Ma ago,which was product of Early Permian(Artinskian) volcanic activities. |
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| Keywords: | ~(40)Ar-~(39)Ar ages Early Permian Volcanic rocks Sawu'er region in Xinjiang |
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