| 应用氚和14C方法确定柴达木盆地诺木洪地区地下水年龄 |
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| 引用本文： | 刘峰,崔亚莉,张戈,耿付强,刘洁.应用氚和14C方法确定柴达木盆地诺木洪地区地下水年龄[J].现代地质,2014,28(6):1322-1328. |
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| 作者姓名： | 刘峰 崔亚莉 张戈 耿付强 刘洁 |
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| 作者单位： | (1.中国地质大学(北京)水资源与环境学院，北京100083；2.中国地质科学院 水文地质环境地质研究所，
河北 石家庄050061；3.中国地质调查局 西安地质调查中心，陕西 西安710054) |
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| 基金项目： | 中国地质调查局干旱—半干旱区地下水与生态重点实验室开放基金项目;中国地质调查局工作项目“柴达木盆地循环经济试验区水文地质环境地质调查”(1212011220974) |
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| 摘 要： | 以柴达木盆地的诺木洪为研究区，利用氚与14C方法计算了当地各水体的年龄，分析地下水年龄分布特征及其可更新能力。结果表明：山区至冲洪积扇中部地下水年龄为15~18 a，为1952年之后补给的现代水，更新能力较强；冲洪积扇前缘地下水年龄不超过2 ka，具有现代水与古水混合的特征,更新能力较差；溢出带到盆地中心地下水年龄急剧变老，变化范围为5~28 ka,据此推测研究区溢出带位置的隐伏断层具阻水性质，该位置的地下水基本无更新能力。
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| 关 键 词： | 柴达木盆地 氚 14C 地下水年龄 |
Using the 3H and 14C Dating Methods to Calculate the Groundwater Age in Nuomuhong,Qaidam Basin |
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| LIU Feng,CUI Ya-li,ZHANG Ge,GENG Fu-qiang,LIU Jie.Using the 3H and 14C Dating Methods to Calculate the Groundwater Age in Nuomuhong,Qaidam Basin[J].Geoscience——Journal of Graduate School,China University of Geosciences,2014,28(6):1322-1328. |
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| Authors: | LIU Feng CUI Ya-li ZHANG Ge GENG Fu-qiang LIU Jie |
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| Affiliation: | (1.School of Water Resources and Environment, China University of Geosciences, Beijing100083，China；;
2.The Institute of Hydrogeology and Environment Geology， Chinese Academy of Geological Sciences， Shijiazhuang, Hebei050061,China；;
3.Xi’an Center of Geological Survey， China Geological Survey， Xi’an， Shaanxi710054,China) |
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| Abstract: | By utilizing the 3H and 14C dating methods, this paper calculated the distribution of groundwater age and then analyzed the groundwater renewability in the study area of Nuomuhong in Qaidam basin. The results show that: (1) in areas from the mountain to the middle part of the alluvial-proluvial fan, the groundwater age varies slightly (15-18 a), indicating that the groundwater is recharged after 1952 with a strong renewability; (2) the groundwater age, in the leading edge of the alluvial-proluvial fan, is less than 2 ka, indicating that the groundwater is a mixture of the modern groundwater with the fossil groundwater and has a poor renewability; (3) in areas from overflow zone to the center of the basin, the groundwater age gets older rapidly from 5 ka to 28 ka, indicating that the hidden fault underlaid the overflow zone has the property of water blocking, and that groundwater in this area can be considered as unrenewable resources |
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| Keywords: | Qaidam basin 3H 14C groundwater age |
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