1. Geology Department, Faculty of Science; Cairo University; Giza Egypt
2. Departament de Cristal.lografia, Mineralogia i Dipòsits Minerals; Universitat de Barcelona; Spain
3. Department of Geography; University College London; WC1E 6BT UK
4. Environmental Studies and Research Institute; Minufiya University; Egypt
5. Supreme Council of Antiquities (SCA); Egypt