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    Geochemical Analysis of Recharge and Groundwater Salinization in the Northern Hueco Bolson Aquifer, El Paso, Texas

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    azu_etd_1610_sip1_m.pdf
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    Author
    Druhan, Jennifer Lea
    Issue Date
    2006
    Keywords
    Geochemistry
    Recharge
    Salinization
    Groundwater
    Hueco Bolson
    Advisor
    Meixner, Thomas
    Committee Chair
    Meixner, Thomas
    
    Metadata
    Show full item record
    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    Identification of recharge waters, groundwater flowpaths, and solute sources is needed to best manage the increasing salinity of the Hueco Bolson aquifer, the primary water resource for El Paso, Texas and Juárez, Mexico. To address these issues, we have analyzed for a suite of geochemical tracers on water samples collected from 33 discrete vertical zone test holes. On the basis of δD and δ¹⁸O data, two regional recharge sources were recognized, one originating from western mountain-fronts and one from through-flow of the adjacent Tularosa aquifer. Chloride concentrations were strongly correlated with lithologic formations and both Cl/Br and ³⁶Cl ratios suggested halite dissolution within the Ft. Hancock formation as the primary chloride source. In contrast, sulfur isotopes indicated that most sulfate originates from Tularosa Permian gypsum sources. These sources suggested that chloride salinization of wells is the result of direct upconing of waters from the Ft. Hancock formation.
    Type
    text
    Electronic Thesis
    Degree Name
    MSCE
    Degree Level
    masters
    Degree Program
    Hydrology
    Graduate College
    Degree Grantor
    University of Arizona
    Collections
    Master's Theses

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