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Hydrochemistry and isotope composition of springs in the Tecopa basin, southeastern California, USA
Larsen, D; Swihart, GH; Xiao, YK
2001-09-01
Source PublicationCHEMICAL GEOLOGY
Volume179Issue:1-4Pages:17-35
SubtypeArticle
AbstractSprings and seeps in the Tecopa basin were sampled and analyzed for their major ion chemistry and oxygen, hydrogen, and boron isotope compositions in order to assess the possible origins of the waters. The Tecopa basin is a groundwater discharge area along the Amargosa River drainage basin south of the Nevada Test Site and proposed high-level nuclear waste repository at Yucca Mountain, NV. The spring waters are categorized into three end-member hydrochemical facies: (1) pH-neutral, Na + Ca + Mg + SO4 + HCO3 water with moderate to high total-dissolved solids;, (2) mildly alkaline, Na + Cl + SO4 + HCO3 water with high total dissolved solids; and (3) alkaline, Na + HCO3 + CO3 water with high total dissolved solids. The temperatures of most of the springs range from 17 degreesC to 32 degreesC; however, waters in the Tecopa Hot Spring area range from 9 degreesC to 47 degreesC. The oxygen and hydrogen isotope compositions (normalized to SMOW) of the waters are as follows. The facies 1 springs have a mean delta O-18 of - 12.77 +/- 0.14%o (1 sigma) and delta D of - 94.9 +/- 0.5%(o) (1 sigma). The facies 2 springs have a mean delta O-18 of - 12.73 +/- 0.19%o (1 sigma) and delta D of - 97.7 +/- 0.9%o (1 sigma). The facies 3 spring has a mean delta O-18 of - 13.09 +/- 0.17%o (1 sigma) and delta D of - 103.5 +/- 0.7%o (1 sigma). The mean boron concentrations and isotope compositions range from 2.4 mg/l and delta (11) B of + 2.5%o for facies I springs to 72.8 mg/l and delta (11) B of - 3.8%o for the facies 3 spring.
KeywordStable Isotopes Boron Isotopes Hydrochemistry Hydrogeology Springs California Tecopa Basin
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordIONIZATION MASS-SPECTROMETRY ; SOUTHERN NEVADA GROUNDWATER ; STABLE ISOTOPES ; DEATH-VALLEY ; BORON ; WATER ; GEOCHEMISTRY ; RADIOCARBON ; HYDROLOGY
Indexed BySCI
Language英语
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000170251100003
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Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6050
Collection青海盐湖研究所知识仓储
Affiliation1.Univ Memphis, Ground Water Inst, Memphis, TN 38152 USA
2.Univ Memphis, Dept Geol Sci, Memphis, TN 38152 USA
3.Acad Sinica, Qinghai Inst Salt Lakes, Xining 810008, Qinghai, Peoples R China
Recommended Citation
GB/T 7714
Larsen, D,Swihart, GH,Xiao, YK. Hydrochemistry and isotope composition of springs in the Tecopa basin, southeastern California, USA[J]. CHEMICAL GEOLOGY,2001,179(1-4):17-35.
APA Larsen, D,Swihart, GH,&Xiao, YK.(2001).Hydrochemistry and isotope composition of springs in the Tecopa basin, southeastern California, USA.CHEMICAL GEOLOGY,179(1-4),17-35.
MLA Larsen, D,et al."Hydrochemistry and isotope composition of springs in the Tecopa basin, southeastern California, USA".CHEMICAL GEOLOGY 179.1-4(2001):17-35.
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