| 桂林地区岩溶水87Sr/86Sr特征 |
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| 引用本文：王涛,王增银.2005.桂林地区岩溶水87Sr/86Sr特征[J].地球学报,26(z1):299-302. |
| DOI：10.3975/cagsb.2005.s1.97 |
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| 中文摘要:锶是岩石圈上部含量最大的微量元素，其元素及其同位素化学性质都比较稳定。不同水岩作用条件下，锶元素含量及其同位素值都不一样。本文通过对桂林地区的两个典型岩溶地下河系统不同类型地下水样87Sr/86Sr值和Sr含量的分析，得出；流经不同岩层的地下水其87Sr/86Sr值和Sr含量不同，同一地下河系统中不同类型地下水的87Sr/86Sr值Sr含量不同，其值的差异由岩性和水岩作用决定。说明87Sr/86Sr值能反映地下水的形成、径流和混合作用，是较理想的示踪剂，在岩溶水研究中具有很广阔的应用前景。 |
| 中文关键词:87Sr/86Sr 地下河系统 岩溶 桂林地区 |
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| 87Sr/86Sr Characteristics of Karst Water in Guilin Area |
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| Abstract:Strontium is the richest trace element in upper lithosphere. Due to its stable chemical characteristics, it is inactive to most substances under natural conditions. The Sr concentrations and 87Sr/86Sr ratios are obviously different in different water-rock interac-tion settings. Based on analyzing Sr2+ and 87Sr/86Sr of different groundwater samples in two underground river systems, this paper has drawn some conclusions. Underground waters passing through different strata have different 87Sr/86Sr ratios and Sr concentra-trations. These differences depend on the strata and the water rock interaction. Therefore, the 87Sr/86Sr ratio can reflect the forma-tion, runoff and mixing of underground water and hence is an ideal tracer with a wide application vista in karst water research. |
| keywords:87Sr/86Sr underground river system karst Guilin area |
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