TITLE:
Electrical Resistivity Contrasts and High Flow Rates Discontinuous Aquifers Identification in a Sheared Crystallophyllian Basement Zone at Boniérédougou (North-Central Côte d’Ivoire)
AUTHORS:
Simon Pierre Djroh, Kouamelan Serge Kouamelan, Yacouba Ouattara, Serge Pacome Dégine Gnoleba
KEYWORDS:
Shear, Fractured Aquifer, High Flow Rate, Côte d’Ivoire
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.10 No.11,
November
15,
2022
ABSTRACT: This study proposes an alternative approach to the
investigation of high flow hydrogeological fractures within the basement in the
Dabakala region of north-central Côte d’Ivoire. The used approach consists of
exploring the subsurface by measuring electrical resistivity contrasts along
the main shear direction within crystallophyllian rocks. Electrical resistivity profiling and vertical electrical sounding techniques, coupled with boreholes monitoring, have identified fractured
aquifers whose best flow rates are around 96 and 116 m3/h. These
aquifers mostly hosted in granodiorite have an average strength of 10 meters
and are located at depth of around 100 meters. They are associated with open
fractures created by tangential shear stresses that have affected the Dabakala
volcano-sedimentary trench formations. The search for fractured aquifers along
the main shear direction offers great perspective for obtaining high flow
rates.