Geophysical study of Hammam Sidi Maamar geothermal site in Central Tunisia for sustainable development

Azaïez, Hajer; Gabtni, Hakim; Chabaane, Achref; Sayem, G.; Bédir, Mourad

doi:10.1016/j.jafrearsci.2020.103897

Cited by 7 publications

(4 citation statements)

References 21 publications

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“…3). This section highlights the Hajeb Layoun graben and the Baten Damous outcrop in the NE side and the Jilma-Ouled Asker syncline in the SW side (Jellalia 2010;Khazri 2014;Khazri and Gabtni 2014;Jellalia et al 2015;Jellalia 2016;Thebti et al 2018;Azaiez et al 2020). From West to East, seismic horizons dip to the depth from the eastern flank of Jebel Mghilla, going towards the Hajeb Layoun-Jilma plain and recording the maximum thickness of the sediments.…”

Section: Structural Analysismentioning

confidence: 95%

“…Based on previous works in the study area (Burollet 1956;Koschell 1980;El Ghali 1992;Zouaghi 2008;Saidi 2006;Azaiez 2011;Hajji et al 2013Hajji et al , 2018Sayem 2012;Khazri et al 2014;Jellalia et al 2015;Thebti et al 2018;Azaiez et al 2020), it was possible to better understand the geologic deep structuring of the basins and to describe the various configurations that might constitute hydrogeological reservoirs and hydrodynamism.…”

Section: Geological and Hydrogeological Settingsmentioning

confidence: 99%

“…the low resistivity values, detected on the electrical resistivity tomographies made in the Hajeb Layoun graben, and related to thermal water resurgence charged in salts(Azaiez et al 2020). …”

mentioning

confidence: 98%

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Hydrogeothermal potential assessment in a complex tectonic environment by geophysical and hydrogeochemical tools: a case of the geothermal province of Hajeb Layoun-Jilma-Oued Hjal basins (Central Tunisia)

et al. 2021

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This paper presents the results of extensive geological, geophysical, chemical, and geothermometry investigations on natural thermal and cold water discharging throughout the main geological domains of Hajeb Layoun-Jilma and Oued Hjal basins. These areas are known by the rise of two hydrothermal springs of Hammam Sidi Maamer S1, Chenama S2, and Ouled Farhane deep water well S3. Their distributions are strongly related to the main active tectonic structures. Composite geo-seismic model highlights the deep structuring of the Cretaceous and Miocene horizons and the fluid pathways from the recharge areas (Mghilla, Hmaiema, Nara outcrops) to discharge zones of Sidi Maamer (Baten Damous outcrop) and Chenama (Zaouia outcrop). Chemical features of cold and hot water are mainly controlled by water-rock interactions and the dissolution of evaporate and carbonate minerals leading to mixed Ca-Mg-SO 4 -Cl, Ca-Cl, and Na-Cl facies. Molar ratios of (Ca 2+ + Mg 2+ )/ (SO 4 2− + HCO 3 −) and chloro-alkaline indicators implied that ion exchange and reverse ion exchange influenced the hydrogeochemistry of groundwater sources. IIRG diagram reveals two significant aquifer types: one indicating the deep circulation of fluid from the limestone of the Aptian Orbata Formation reservoir and ascends to the surface through S1 and S2 along faults of Hajeb Layoun basin, whereas the second aquifer is characterized by sandstone levels; where water circulates through the late Miocene Saouaf Formation deposits to the surface also along faults of Oued Hjal basin. Silica geothermometers for S1 and S2 give the best results for reservoir temperatures varying from 70.43 to 83 °C and depths range from 1709 to 2153 m. For S3 deep hot water well, K-Mg geothermometer gives the most reasonable temperature estimation of 48 °C and depth up to 910 m. Giggenbach diagram reveals that water samples are not in an equilibrium state with the reservoir rocks.

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Section: Structural Analysismentioning

confidence: 95%

Section: Geological and Hydrogeological Settingsmentioning

confidence: 99%

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Hydrogeothermal potential assessment in a complex tectonic environment by geophysical and hydrogeochemical tools: a case of the geothermal province of Hajeb Layoun-Jilma-Oued Hjal basins (Central Tunisia)

et al. 2021

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“…In Tunisia, geothermal waters are mainly employed for balneotherapy and the irrigation of crops in greenhouses. Several researchers have inventoried different geothermal water springs [5][6][7][8], evaluated their potential [9,10], described their chemical and isotopic compositions [1,11], and investigated their relation with the geological and structural patterns of Tunisia [12,13]. Previous studies also revealed the predominance of crustal gas signatures, the dissolution of halite-bearing Triassic evaporites, and the influence of regional geology, in particular the structural control of the faults, which allow for the deep circulation and rising of fluids on geothermal springs across Tunisia [1,10,[12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Major- and Trace-Element Geochemistry of Geothermal Water from the Nappe Zone, Northern Tunisia: Implications for Mineral Prospecting and Health Risk Assessment

Ayari,

Barbieri,

Boschetti

et al. 2023

Environments

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A comprehensive hydrogeochemical survey of the geothermal waters from the Nappe Zone (Maghrebides fold-and-thrust belt) was undertaken to determine the origins of geothermal waters and to assess the health risks associated with their potentially toxic elements. A total of 11 geothermal water and 3 stream water samples were collected and analysed for major and trace elements (As, B, Ba, Fe, Mn, Pb, Sr, Zn). Two main geothermal water groups were highlighted by hydrogeochemical diagrams and multivariate analyses (PCA, HCA): the first group is the Na−Cl type, TDS > 10 g/L, controlled by deep circulation, while the second group is the Na-Cl−HCO3 type, TDS < 2 g/L, and controlled by shallow circulation. A curved hydrogeochemical evolution path, observed from mixed bicarbonate shallow groundwater to chloride geothermal water, indicates that the interaction with evaporites drives the chemistry of the geothermal samples. On these, the As enrichments come from sulphide oxidation polymetallic mineralisation during the upwelling to the surface from E–W major lineaments. Therefore, E–W lineaments are potential areas for mineral prospecting. The health risk assessment reveals that the concentration of potentially toxic elements in geothermal waters are lower than the guideline values for the protection of freshwater aquatic life and dermal exposure (bathing or balneology).

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Application of electrical resistivity tomography method for the assessment of olive mill wastewater infiltration in storage basin site (southeastern Tunisia)

et al. 2021

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Geophysical study of Hammam Sidi Maamar geothermal site in Central Tunisia for sustainable development

Cited by 7 publications

References 21 publications

Hydrogeothermal potential assessment in a complex tectonic environment by geophysical and hydrogeochemical tools: a case of the geothermal province of Hajeb Layoun-Jilma-Oued Hjal basins (Central Tunisia)

Hydrogeothermal potential assessment in a complex tectonic environment by geophysical and hydrogeochemical tools: a case of the geothermal province of Hajeb Layoun-Jilma-Oued Hjal basins (Central Tunisia)

Major- and Trace-Element Geochemistry of Geothermal Water from the Nappe Zone, Northern Tunisia: Implications for Mineral Prospecting and Health Risk Assessment

Application of electrical resistivity tomography method for the assessment of olive mill wastewater infiltration in storage basin site (southeastern Tunisia)

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