Fig. 1From: Characterization and purification of Algerian natural bentonite for pharmaceutical and cosmetic applicationsLocation of the study area (Hammam Boughrara, Maghnia-Tlemcen). 1. Quaternary, 2. Pliocene, 3. Miocene, 4. Upper Miocene, 5. Upper Oxfordian, 6. Kimmeridgian, 7. Scree, 8. Dolomite, 9. Jurassic, 10. ColluviumBack to article page