1. Department of Earth Sciences, College of Science, Sultan Qaboos University, PO Box 36, PC 123, Al-Khod, Muscat, Sultanate of Oman
2. Department of Physics and Earth Sciences, University of Ferrara, Via Saragat 1, 44122, Ferrara, Italy
3. Department of Applied Physics and Astronomy, College of Sciences, University of Sharjah, PO Box 27272, Sharjah, United Arab Emirates
4. Department of Applied Geosciences, German University of Technology GUtech, PO Box 1816, PC 130, Halban, Sultanate of Oman