| 贵州碳酸盐岩风化壳形成年龄的初步判定 |
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| 引用本文： | 刘春茹,刘秀明,王世杰,万景林,郑德文.贵州碳酸盐岩风化壳形成年龄的初步判定[J].原子能科学技术,2008,42(6):568-569. |
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| 作者姓名： | 刘春茹 刘秀明 王世杰 万景林 郑德文 |
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| 作者单位： | 1.中国科学院 ;地球化学研究所 ;环境地球化学国家重点实验室，贵州 ;贵阳550002；2.中国地震局 ;地质研究所 ;地震动力学国家重点实验室，北京 ;100029 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)
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国家自然科学基金 |
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| 摘 要： | 贵州地区广泛分布的碳酸盐岩风化壳的直接测年一直未解决。本工作在前期研究基础上，利用裂变径迹法详细地对3个风化壳剖面中的次生石英颗粒进行年代学研究，以初步界定风化壳的形成时代。测试结果表明，新蒲风化壳剖面大约开始形成于距今8.5Ma；官坝风化壳剖面大约开始形成于距今7.3Ma；大兴风化壳剖面大约开始形成于距今4.6Ma。
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| 关 键 词： | 裂变径迹 石英 风化壳 碳酸盐岩 贵州 |
| 收稿时间： | 2008-01-25 |
| 修稿时间： | 2008-03-29 |
Primary Estimation of Forming Date for Carbonate Weathering Crust in Guizhou Province |
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| LIU Chun-ru,LIU Xiu-ming,WANG Shi-jie,WAN Jing-lin,ZHENG De-wen.Primary Estimation of Forming Date for Carbonate Weathering Crust in Guizhou Province[J].Atomic Energy Science and Technology,2008,42(6):568-569. |
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| Authors: | LIU Chun-ru LIU Xiu-ming WANG Shi-jie WAN Jing-lin ZHENG De-wen |
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| Affiliation: | 1.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China; 2. State Key Laboratory of Earthquake Dynamics,Institute of Geology, Chinese Earthquake Administration, Beijing 100029, China |
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| Abstract: | The problem of directed dating of carbonate weathering crust in Guizhou Province hasn’t been resolved. On the base of our previous study, we tested in detail the ages of antigenic quartz grains by fission track dating method and give a limitation of the forming date to carbonate weathering crust. The results show that the age of Xinpu profile is younger than 8.5 Ma, and the age of Guanba profile is younger than 7.3 Ma, and the age of Daxing profile is younger than 4.6 Ma. |
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| Keywords: | fission track quartz weathering crust carbonate rock Guizhou Province |
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