The layers lithology traversed by Abouabou drilling was studied using successively 32 samples to a depth of about 240 m.
The log established indicates a high level of clay about 63 m, the bottom to the surface. This level is followed by alternating average levels (about 26 m) of sandy clays and sands rich in limestone, with a thickness of 72 m.
This assembly is surmounted by average to low levels sandy (40 to 09 m), with calcareous intercalation to the surface. These sands alternate with clay banks of 16 to 10 m. the grain size analyses show essentially coarse to very coarse sands. They have generally bad standings with a strong asymmetry to the fines. Although their characteristics argue for a reduction in their water holding capacity, these sandy levels are still favorable hydrogeological tanks.
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