首页 | 本学科首页   官方微博 | 高级检索  
     

鄂尔多斯盆地南部马莲河流域地下水中锶富集特征及成因分析
引用本文:李海学,程旭学,马岳昆,刘伟坡,周斌. 鄂尔多斯盆地南部马莲河流域地下水中锶富集特征及成因分析[J]. 现代地质, 2021, 35(3): 682-692. DOI: 10.19657/j.geoscience.1000-8527.2020.037
作者姓名:李海学  程旭学  马岳昆  刘伟坡  周斌
作者单位:1.中国地质调查局水文地质环境地质调查中心,河北 保定 0710512.甘肃省地质环境监测院,甘肃 兰州 730050
基金项目:中国地质调查局地质调查项目“陕甘宁革命老区1∶5万水文地质调查”(DD20160288);“渭河流域水文地质调查”(DD20190333)
摘    要:马莲河流域地处鄂尔多斯盆地南部黄土高原区,按储水介质和埋藏条件可将地下水分为黄土潜水、基岩潜水和基岩承压水三类,利用2015—2018年流域的295组地下水水化学数据,分析了地下水中锶(Sr2+)的质量浓度水平、垂向分布及沿流向分布的特征,并采用因子相关性研究地下水中Sr2+的来源和富集成因。结果表明:马莲河流域地下水富锶现象显著,黄土潜水、基岩潜水和基岩承压水中锶的平均质量浓度分别为1.14 mg/l、1.39 mg/l和5.24 mg/l;地下水中锶富集成因主要是含锶矿物天然状态下的水-岩作用,黄土潜水、基岩潜水和基岩承压水三类地下水中Sr2+的主要来源分别为碳酸盐岩与铝硅酸盐岩、碳酸盐岩与硫酸盐和碳酸盐矿物的溶滤作用;地下水中Sr2+的质量浓度沿流向呈逐渐增大的趋势,在不同区域中随深度变化的趋势不一致。

关 键 词:马莲河    地下水  富集  水-岩作用  鄂尔多斯盆地  
收稿时间:2019-05-11
修稿时间:2020-04-20

Characteristics and Formation Mechanism of Strontium-rich Groundwater in Malian River Drainage Basin,Southern Ordos Basin
LI Haixue,CHENG Xuxue,MA Yuekun,LIU Weipo,ZHOU Bin. Characteristics and Formation Mechanism of Strontium-rich Groundwater in Malian River Drainage Basin,Southern Ordos Basin[J]. Geoscience of Geosciences, 2021, 35(3): 682-692. DOI: 10.19657/j.geoscience.1000-8527.2020.037
Authors:LI Haixue  CHENG Xuxue  MA Yuekun  LIU Weipo  ZHOU Bin
Affiliation:1. Center for Hydrogeology and Environment Geology,China Geological Survey,Baoding,Hebei 071051,China2. Geological Environment Monitoring Institute of Gansu Province, Lanzhou,Gansu 730050, China
Abstract:The Malian River drainage basin is located at the loess plateau in the southern Ordos Basin, in which the groundwater can be divided into the loess phreatic water, bedrock phreatic water and bedrock confined water based on the storage medium and burial conditions. Using 295 sets of groundwater hydrochemical data collected from 2015 to 2018, we analyze the Sr2+ concentration level, vertical and downstream distribution characteristics in the groundwater, and study the source and enrichment cause of Sr2+ in groundwater through factor correlation analysis. The results indicate that the groundwater Sr enrichment in the Malian River drainage basin is distinct, with the average Sr concentrations in the loess phreatic water, bedrock phreatic water, and bedrock confined water being 1.14 mg/l, 1.39 mg/l, and 5.24 mg/l, respectively. The Sr enrichment is mainly led by the water-rock interaction of Sr-bearing minerals. Major sources of Sr2+ in the loess phreatic water, bedrock phreatic water, and bedrock confined water are leaching from the carbonates and aluminosilicates, carbonates and sulfates, and carbonate minerals, respectively. The Sr2+ concentration in groundwater gradually increases along the flow direction, but varies with depth in different areas.
Keywords:Malian river  strontium  groundwater  enrichment  water-rock interaction  Erdos Basin  
本文献已被 CNKI 等数据库收录!
点击此处可从《现代地质》浏览原始摘要信息
点击此处可从《现代地质》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号