aquifere des calcaires du Turonien (Bassin du Tadla, Maroc). Alimentations locales et lointaines a partir de l'Atlas

The Tadla basin is situated to the south of the Moroccan Meseta; it is limited by the overlapping north Atlas rocks and contains an important aquifer within the Turonian limestones. The unconfined ground water to the north becomes confined to the south. The piezometric map shows that the flows conve...

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Bibliographic Details
Published inJournal of hydrology (Amsterdam) Vol. 183; no. 3/4; pp. 433 - 443
Main Authors Hsissou, Y, Chauve, P, Mania, J
Format Journal Article
LanguageFrench
Published 1996
Subjects
aquifers
geology
groundwater extraction
groundwater flow
groundwater recharge
limestone
oxygen
stable isotopes
Morocco
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Summary:The Tadla basin is situated to the south of the Moroccan Meseta; it is limited by the overlapping north Atlas rocks and contains an important aquifer within the Turonian limestones. The unconfined ground water to the north becomes confined to the south. The piezometric map shows that the flows converge towards the Wadi Tessaout downgradient following a large NE-SW drainage axis which represents a highly permeable zone. The water flow and the environmental isotopes show that the Turonian is supplied at the same time from both the outcrop of the 'plateau des phosphates' to the north and the Atlas aquifers to the east. The drainage axis represents a mixing zone. Hydrometric monitoring of the springs of the Wadi Tessaout downgradient, and their hydrochemical and isotopic characteristics, shows that they are common outlets of Miocene-Pliocene-Quaternary and Turonian aquifers.
ISSN:0022-1694
1879-2707