半干旱浅层含水层水文地球化学演化与成矿成因——以阿尔及利亚东北部Barika地区为例

IF 0.8 Q4 WATER RESOURCES
Assia Tafrount, T. Drias, D. Chenaf, Brinis Nafaa
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引用次数: 1

摘要

大多数中东和北非地区的特点是干旱和半干旱气候。因此,饮用水的供应和管理已成为地方和地区当局面临的一项具有挑战性的任务。巴里卡地区的Mio-Plio第四纪含水层是该地区唯一的饮用和灌溉水库。本文的目的是以主元素为指标,确定该含水层地下水矿化的成因和演化过程。为了实现这一目标,于2018年6月和2019年3月从含水层的几个钻孔中收集了水样,并随后进行了分析。根据Gibbs plot、Piper、化学相关性和化学数据统计分析得到的结果确定了地下水矿化的成因。蒸发矿物的溶解、碳酸盐的沉淀、蒸发蒸腾和离子交换反应已被确定为矿化的主要过程。理化分析结果表明,该水体主要由氯、硫酸钙和镁三种相类型组成,部分钻孔在两个采样期间的相类型略有变化。这是由于与含水层地质的相互作用以及气候变化引起的水资源短缺。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Hydrogeochemical evolution and mineralization origin in a semi-arid shallow aquifer: a case study of the Barika area in northeast Algeria
Most Middle Eastern and North African regions are characterized by an arid and semi-arid climate. As such, the drinking water supply and management have become a challenging task for local and regional authorities. The Mio-Plio Quaternary aquifer of the Barika area is the only drinking and irrigation water reservoir in the region. The objective of this paper is to identify the origin and evolution process of the groundwater mineralization of this aquifer using major elements as indicators. To achieve this objective water samples were collected, from several boreholes drilled in the aquifer, in June 2018 and March 2019, and subsequently analyzed. The results obtained in terms of Gibbs plot, Piper, chemical correlation, and statistical analysis of chemical data identified the origins of groundwater mineralization. The dissolution of evaporated minerals, precipitation of carbonates, evapotranspiration, and ion exchange reactions have been identified as the primary processes of mineralization. The results of the physicochemical analysis showed that these waters consisted mainly of chloride, calcium sulfate, and magnesium facies types with a slight change of facies in some boreholes during the two sampling periods. This is due to the interactions with the-aquifer geology and to the water scarcity caused by climate change.
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来源期刊
CiteScore
1.80
自引率
50.00%
发文量
36
审稿时长
8 weeks
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