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| 硫同位素技术在北方岩溶水资源调查中的应用实例 | |
| 引用本文： | 张江华,梁永平,王维泰,韩行瑞,侯光才.硫同位素技术在北方岩溶水资源调查中的应用实例[J].中国岩溶,2009,28(3):235-241. |
| 作者姓名： | 张江华 梁永平 王维泰 韩行瑞 侯光才 |
| 作者单位： | 1. 阳泉市水利局,山西,阳泉,045001 2. 中国地质科学院岩溶地质研究所,广西,桂林,541004 3. 中国地质调查局西安矿产地质研究所,陕西,西安,710054 |
| 基金项目： | 国土资源部行业基金项目"中国北方岩溶区地下水环境问题成因机制与保护对策研究" |
| 摘 要： | 从地球化学背景方面看，在以奥陶系碳酸盐岩为含水介质的中国北方多数岩溶地下水浅循环系统中，岩溶水的硫酸根有三个主要来源，分别是水对中奥陶统中石膏的溶解、岩溶含水层上覆煤系地层中黄铁矿氧化溶解并补给岩溶水以及与土层密切相关的地表水中硫酸根的加入。上述三类水的δ^34S同位素值的差别很大，中奥陶统中石膏硫同位素最重，δ^34S值一般在20‰～32‰；煤系地层中黄铁矿的硫同位素最轻，一般在一10‰～10‰，多数低于4‰；而地表水的硫同位素介于上述二者之间，δ^34S值较稳定分布在7‰～12‰之间。利用这一具有示踪意义的特点，我们对一些泉域系统的岩溶地下水补、排关系以及一些水化学成分的来源进行了成功的解释，为进一步认识岩溶水文地质条件提供了有力的佐证。 |
| 关 键 词： | 鄂尔多斯盆地 岩溶水 硫同位素 |
| 收稿时间： | 2009/6/12 0:00:00 |
A practical use of 34S in the investigation of karst groundwater resource in North China |
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| Zhang Jiang-hu,Liang Yong-ping,Wang Wei-tai,Han Xing-rui and Hou Guang-cai.A practical use of 34S in the investigation of karst groundwater resource in North China[J].Carsologica Sinica,2009,28(3):235-241. | |
| Authors: | Zhang Jiang-hu Liang Yong-ping Wang Wei-tai Han Xing-rui and Hou Guang-cai |
| Affiliation: | ZHANG Jiang-hua,LIANG Yong-ping,WANG Wei-tai,HAN Xing-rui,HOU Guang-cai (1. Yangquan Water Conservancy Bureau, Yangquan, Shanxi 045001, China; 2. Institute of Karst Geology, CAGS, Guilin Guangxi 541004, China; 3. Xi＇an Institute of Geology and Minerals Resources, CGS, Xi＇an, Shanxi 710054, China) |
| Abstract: | In view of geo-chemical background, there are three major origins for sulfate form the karst water in most karst shallow circulation system in North China, whose aquifers is Ordovician carbonate rock ： （1） dissolution of gypsum in the middle of Ordovician; （2） oxidation and dissolution of the pyrite in the overlying strata of coal measures, which recharge the karst groundwater; （3） sulfate from surface water that is directly related with top soil. Many tests indicate that the 34 S value in groundwater changes greatly among-different sulfate radical origins. Generally, the sulfate isotope from sulfate radical in the middle of Ordovician is heaviest in the three kinds of water with a 334S value of 20‰-32‰. while,the sulfate isotope from the pyrite in coal measures is lightest with a δ^34S value of --10‰-10‰,which is mostly less than 4‰. The sulfate isotope from surface water is between the two kinds of origins mentioned above with a δ^34S value of 7‰-12‰. In light of the tracing significance features, the relations between recharge and discharge and the origins of some hydro-chemical elements in some spring systems are successfully interpreted, which give powerful proof for further understanding of the hydro-geological conditions. |
| Keywords: | Ordos basin karst groundwater sulfur isotope |
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