NDLI: Geological, hydrogeological, and geothermal factors associated to the origin of arsenic, fluoride, and groundwater temperature in a volcanic environment “El Bajío Guanajuatense”, Mexico

Content Provider	Springer Nature Link
Author	Morales, Ivan Villanueva Estrada, Ruth Esther Rodríguez, Ramiro Armienta, María Aurora
Copyright Year	2015
Abstract	Arsenic and fluoride groundwater concentrations over national standards for drinking water were measured in the regional aquifer of Juventino Rosas, Guanajuato State, Central Mexico. Also anomalous temperature occurs in groundwater wells of the area. Concentrations of total dissolved solids, silica, and chloride are too low to indicate a geothermal heat source. Additionally, isotopic evidence indicates that groundwater from the studied wells is subject to an evaporation process affected by the humid weather of the zone. The chemical characteristics of the water indicate a deep circulation warm water system in normal geothermal gradient. The warm waters of Juventino Rosas are mainly of three types: Water type I: (Na–HCO$_{3}$), represented by the highest temperature wells and presence of fluoride and arsenic; water type II (Na–Ca–HCO$_{3}$) that represents a mixing process between water types I and III. In this group, the sample 13JR contained high concentration of F$^{−}$; water type III (Ca–HCO$_{3}$), represented only by one sample (Cen 2) located over the outcrop of shales, limestones, and metamorphic rocks. This sample contains the highest concentrations of sulfate, manganese, and iron. All the geological and geochemical evidences indicate that rhyolite units are the most probable source of As and F$^{−}$. The area corresponds to a low-temperature and low-enthalpy system and not to a well defined geothermal system.
Starting Page	5403
Ending Page	5415
Page Count	13
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	74
Issue Number	6
e-ISSN	18666299
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-05-28
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Arsenic Fluoride Low-temperature system Trans-Mexican volcanic belt Silica geothermometry Juventino Rosas Geology Hydrology/Water Resources Geochemistry Environmental Science and Engineering Terrestrial Pollution Biogeosciences
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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