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Geochemical analysis of recharge and salinization in the northern Hueco Bolson aquifer, El Paso, Texas.

机译：德克萨斯州埃尔帕索北部Hueco Bolson含水层补给和盐碱化的地球化学分析。

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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 Juarez, 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 deltaD and delta18O 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.
机译：需要识别补给水，地下水流径和溶质源，以最好地管理Hueco Bolson含水层盐度的增加，这是德克萨斯州埃尔帕索和墨西哥华雷斯的主要水资源。为了解决这些问题，我们对从33个垂直区域的离散测试孔中收集的水样进行了一套地球化学示踪剂分析。根据delDD和delta18O数据，识别出两种区域补给源，一种来自西部山前，另一种来自相邻的Tularosa含水层的通流。氯化物浓度与岩性形成密切相关，Cl / Br和36Cl比值均表明Ft内有岩盐溶解。汉考克的形成是主要的氯化物来源。相反，硫同位素表明，大多数硫酸盐都来自Tularosa二叠纪石膏源。这些资料表明，井中的氯化物盐碱化是来自FT的水直接上冲的结果。汉考克形成。

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