1. Geology Department, Faculty of Science, Minia University, Minia 61519, Egypt
2. Faculty of International Resource Sciences, Akita University, Tegatagakuen-machi 1-1, Akita 010-8502, Japan
3. Geology and Geophysics Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
4. Core Laboratories, 6316 Windfern Road, Houston, TX 77040, USA