Contribution to the Numerical Geological Mapping of the Paleocene in the Western Part of Thies (Senegal)

The locality of Thies has significant mining and hydrogeological resources that are of major eco-nomic interest and necessitates a sustainable management. Most of these resources are con- tained in the Paleocene. For a better assessment of Paleocene, we elaborated a spatial model using available seismic lines, oil and hydraulic drills. The data were integrated using interpolation, mainly natural neighbor method. The obtained model should make it possible to understand the variation of the lithostratigraphic parameters of the Paleocene. The extraction from the model of the upper and the lower limits showed that the Paleocene is shallow and is outcropping to sub- out-cropping in the area of Thiès. The model was validated using previously available geological map. Also, a crosscorrelation of the predicted and the observed data showed that the model is accurate. (Authors)