Neogene aquifer: geochemistry and structuring in the Sidi Saad basin, central Tunisia

Houatmia, Faten; Khomsi, Sami; Malayah, Ammar; Andolssi, Mouna; Bédir, Mourad

doi:10.1007/s12517-014-1433-8

Cited by 4 publications

(1 citation statement)

References 19 publications

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“…This area is affected by faults rooted in the Triassic series (Abbes 2004, Tanfous Amri 2007, Zouaghi 2008, which implies the possibility of contamination of deep groundwater by Triassic evaporites. Seismic reflection methods are used in many studies in the Sahel to characterize the relationship between the basin structure and the aquifer distribution and hydrodynamism (Khomsi et al 2012, Lachaal et al 2012, Houatmia et al 2014.…”

Section: Discussionmentioning

confidence: 99%

Basin structure and water quality of the Oligocene aquifer in the Sebkhet El Behira basin (central Tunisia)

Houatmia

Khomsi

Mlayah

et al. 2016

Hydrological Sciences Journal

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The Sebkhet El Behira-Garaat El Majdoul multilayer aquifer system is composed of Mio-Plio-Quaternary and Oligocene groundwater exploited in Sidi Bouzid and Kairouan governorates. Annual withdrawal volumes from El Behira Oligocene groundwater were about 0.37 hm 3 in 2005 and 0.36 hm 3 in 2008. The present study of the Oligocene reservoir in the Sebkhet El Behira-Garaat El Majdoul basin is based on various data including 2D seismic sections, petroleum wells, field geological cross-sections and geochemical analysis. The gathered data allowed us to establish the tectonic framework and to define its influence on the structure of the aquifers seated in the deep Oligocene sandstone reservoirs. Three Oligocene sub-basin aquifers are defined showing different depth, thickness and petrophysical characteristics: lower salinity (<1.5 g/L) and higher porosity (30%). Two field sections in the northern and in the southern parts of Cherahil anticline exhibit the presence of four to five sandstone levels. The anticlines limit the Sebkhet El Behira-Garaat El Majdoul basin. In addition, the morphostructural configuration controls the piezometry of underground flows in the Oligocene and Mio-Plio-Quaternary unconfined aquifers.

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Section: Discussionmentioning

confidence: 99%