Processes of water–rock interaction in the Turonian aquifer of Oum Er-Rabia Basin, Morocco

Ettazarini, Said

doi:10.1007/s00254-005-0088-x

Cited by 43 publications

(19 citation statements)

References 10 publications

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“…Water quality controls for the Liassic aquifer and warm springs include calcite dissolution, dolomite dissolution, mixing with water that has dissolved gypsum and halite from underlying Triassic units, and possibly calcite precipitation. These hydrochemical processes have been reported for other carbonate aquifers in the orogenic belts of northern Morocco and southern Spain (López‐Chicano et al 2001; Ettazarini 2005; Moral et al 2008). Additional data on ground water temperature, pH, sediment mineralogy, and the C and S isotope compositions of solid phases and solutes, as shown by Plummer et al (1990), would help to constrain plausible processes further.…”

Section: Discussionsupporting

confidence: 71%

Controls on Ground Water Chemistry in the Central Couloir Sud Rifain, Morocco

Benaabidate

Fryar²

2010

Groundwater

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Irrigation, urbanization, and drought pose challenges for the sustainable use of ground water in the central Couloir sud rifain, a major agricultural region in north-central Morocco, which includes the cities of Fès and Meknès. The central Couloir is underlain by unconfined and confined carbonate aquifers that have suffered declines in hydraulic head and reductions in spring flow in recent decades. Previous studies have surveyed ground water flow and water quality in wells and springs but have not comprehensively addressed the chemistry of the regional aquifer system. Using graphical techniques and saturation index calculations, we infer that major ion chemistry is controlled (1) in the surficial aquifer by cation exchange, calcite dissolution, mixing with deep ground water, and possibly calcite precipitation and (2) in the confined aquifer and warm springs by calcite dissolution, dolomite dissolution, mixing with water that has dissolved gypsum and halite, and calcite precipitation. Analyses of (2)H and (18)O indicate that shallow ground water is affected by evaporation during recharge (either of infiltrating precipitation or return flow), whereas deep ground water is sustained by meteoric recharge with little evaporation. Mechanisms of recharge and hydrochemical evolution are broadly consistent with those delineated for similar regional aquifer systems elsewhere in Morocco and in southern Spain.

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Section: Discussionsupporting

confidence: 71%

Controls on Ground Water Chemistry in the Central Couloir Sud Rifain, Morocco

Benaabidate

Fryar²

2010

Groundwater

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“…Sources of dissolved ions into inland water include atmospheric deposition of salts, weathering of rock-forming minerals (silicates, carbonates, evaporate, sulfide) and anthropogenic sources (Berner and Berner, 1987;Zhang et al, 1995;Garcia et al, 2001;Panapoulos et al, 2004;Ettazarini, 2005;Singh et al, 2005;Tonetto and Bonotto, 2005;Kumar et al, 2006). In the study area hydrochemical indices (Tables 2 and 3) and some cross plot relations were used to determine these sources.…”

Section: Assessment Of Hydrogeochemical Processesmentioning

confidence: 99%

Evaluation of hydrogeochemical characteristics of groundwater in parts of the lower Benue Trough, Nigeria

et al. 2010

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The aim of this work is to evaluate the hydrogeochemical characteristics of groundwater in parts of the lower Benue Through in Nigeria as well as to evaluate the variation in groundwater chemistry data and the suitability of the groundwater for drinking and other domestic purposes. This was based on chemical analyses of 44 water samples from existing wells and boreholes in the study area. From the statistical analysis (wide ranges, median and standard deviation), it is obvious that there are significant variations in the quality/composition of groundwater in the period of sampling. The calculated SAR, Na% and RSC values indicated that the water is of excellent to good quality and is suitable for irrigation. Na and HCO 3 are dominant with respect to the chemical composition of the groundwater. On the basis of water chemistry, hydrochemical indices and factor analysis the dominant controls or processes affecting the distribution of geochemical variables in the study area have been shown to be water/rock interaction which is mainly controlled by carbonate and silicate dissolution as well as anthropogenic influence to a lesser extent. Additional processes include cation exchange reactions and reverse ion exchange to a minor extent.

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“…The hydrochemical properties are generally related to (1) water-rock interactions, (2) natural factors such as mixing between seawater and freshwater, (3) anthropogenic factors, and (4) the type of groundwater circulation (Mercado and Billings 1975;Mayer 1999). On the other hand, the composition of water in carbonate systems is the result of the dissolution of variable quantities of rock forming minerals that controls the water chemistry (White 1988;Ettazarini 2005;Edmunds et al 1987;Moral et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Water quality assessment of carbonate aquifers in southern Latium region, Central Italy: a case study for irrigation and drinking purposes

2013

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In southern Latium region, Central Italy, groundwater and spring water resources in the carbonate aquifers are the major contributors of drinking and irrigation water supply. The aim of this study was to review hydrochemical processes that control the groundwater chemistry and to determine the suitability of springs and groundwater for irrigation and drinking purposes on the basis of the water quality indices. Physical (pH, electrical conductivity, total dissolved solids) and hydrochemical characteristics (Na ? , K ? , Ca 2? , Mg 2? , HCO 3 -, Cl -, and SO 4 -) of springs and groundwater were determined. To assess the water quality, chemical parameters like sodium adsorption ratio (SAR), total hardness, Mg-hazard (MH), sodium percentage (Na %), salinity hazard, permeability index, and Kelly's ratio were calculated based on the analytical results. A Durov diagram plot revealed that the groundwater has been evolved from Ca to HCO 3 recharge water, followed by mixing and reverse ion exchange processes, due to the respective dominance of Na-Cl and CaCl water types. According to Gibbs's diagram plots, chemical weathering of rock forming minerals is the major driving force controlling water chemistry in this area. Groundwater and spring samples were grouped into six categories according to irrigation water quality assessment diagram of US Salinity Laboratory classification and most of the water samples distributed in category C2-S1 and C3-S1 highlighting medium to high salinity hazard and low sodium content class. The results of hydrochemical analyses and the calculated water quality parameters suggest that most of the water samples are suitable for irrigation and drinking purposes, except for the samples influenced by seawater and enhanced water-rock interaction. High values of salinity, Na %, SAR, and MH at certain sites, restrict the suitability for agricultural uses.

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Processes of water–rock interaction in the Turonian aquifer of Oum Er-Rabia Basin, Morocco

Cited by 43 publications

References 10 publications

Controls on Ground Water Chemistry in the Central Couloir Sud Rifain, Morocco

Controls on Ground Water Chemistry in the Central Couloir Sud Rifain, Morocco

Evaluation of hydrogeochemical characteristics of groundwater in parts of the lower Benue Trough, Nigeria

Water quality assessment of carbonate aquifers in southern Latium region, Central Italy: a case study for irrigation and drinking purposes

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