Hydrochemical and isotopic characterization of the Region Carbonifera aquifer: An example of hydrogeological systems in the semi-arid climates of northeastern Mexico

被引：8

作者：

Batista Cruz, Ramon Yosvanis ^{[1
]}

Liotta, Marcello ^{[2
]}

Batista Rodriguez, Jose Alberto ^{[1
]}

Montecelos Zamora, Yalina ^{[3
]}

Gunter Kretzschmar, Thomas ^{[4
]}

de la Garza Rodriguez, Iliana Margarita ^{[5
]}

Canales Gutierrez, Luis Eutiquio ^{[6
]}

Diaz Martinez, Roberto ^{[1
]}

Blanco Moreno, Jesus Antonio ^{[1
]}

Almaguer Carmenates, Yuri ^{[1
]}

Rodriguez Vega, Antonio ^{[1
]}

Lopez Saucedo, Felipe de Jesus ^{[1
]}

机构：

[1] Univ Autonoma Coahuila, Escuela Super Ingeniena Lic, Blvd Adolfo Lopez Mateos S-N, Nueva Rosita 26800, Coahuila, Mexico

[2] Ist Nazl Geofis & Vulcanol, Sez Palermo, Via Ugo Malfa 153, I-90146 Palermo, PA, Italy

[3] Inst Super Tecnol Muzquiz, Calle Alejandro Gutierrez G,301 OTE, Melchor Muzquiz 26340, Coahuila, Mexico

[4] Ctr Invest Cient & Educ Super Ensenada, Carretera Ensenada Tijuana 3918 Zona Playitas, Ensenada 22860, Baja California, Mexico

[5] Univ Autonoma Coahuila, Fac Ciencias Quim, Dept Quim Analit, Blvd Carranza S-N, Saltillo 25280, Coahuila, Mexico

[6] Comis Estatal Aguas & Saneamiento, Carretera 57,Km 6-5, Saltillo 25294, Coahuila, Mexico

来源：

APPLIED GEOCHEMISTRY | 2022年 / 141卷

关键词：

Coahuila; Region Carbonifera aquifer; Hydrochemistry; Stable isotopes; Water quality; GROUNDWATER; BASIN; NORTHWEST; EVOLUTION; COAHUILA;

D O I：

10.1016/j.apgeochem.2022.105307

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Hydrogeological resources in the semiarid regions of Mexico support the economy and essential domestic activities of around 17 million people. However, adverse climatic conditions and overexploitation of aquifers affect the quantity and quality of the resource, added to problems of anthropogenic pollution and the salinity of water bodies. The Region Carbonifera aquifer represents the primary hydrogeological system in the most important coal-mining region in Mexico, located in the state of Coahuila. In this work, we present a complete dataset of 157 samples from surface and groundwaters sites have been used to characterizethe physicochemical and isotopic processes responsible for the composition of circulating waters, clarifying their origin, and to evaluate the water quality in terms of human consumption and irrigation use. The aquifer is mostly represented by Ca2+-Mg2+-SO42- and Ca2+-Mg2+-Cl- type waters, that supports salinization problems in 76% of the samples as well as sulfate excess. The origin of this chemical behavior seems to be the result of three main processes: 1) dissolution of soluble salts (gypsum, anhydrite and halite), 2) high surface evaporation under semiarid climate conditions, and 3) ionic and reverse ionic exchange. Processes 1 and 2 are also supported by the enrichment trends in the delta O-18 and dD signatures. For human consumption, 21% of the samples show high concentrations above the maximum permissible limits of the Official Mexican Standard (NOM-127-SSA1-1994) in total dissolved solids, Cl-, Na+, and SO42-. Additionally, 80% of the waters have some irrigation limitations due to excess sodicity or salinity. The worst quality waters for human or irrigation uses are located south of the aquifer in the municipalities of Juarez and Progreso. This study exhibits the complex hydric situation of the aquifer, raising awareness of the need to seek alternative sources, rational exploitation of resources, the use of crops that better adapt to these semiarid conditions, and intensifying hydrochemical monitoring in the region.

引用

页数：15

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