Figure 2

Geological map of the study area. This map is extracted from the geologic map of the Mesozoic basin of the Sahara Algero-Tunisian (Busson [1967]). 1 Miocene or Pliocene (with locally continental nummulitic), 2 Quaternary, 3 Pliocene or former Quaternary, 4 upper middle Eocene, 5 dunes, 6 chotts.