1. Department of Geography and Environmental Science, University of Calabar, Calabar 540242, Nigeria
2. Department of Surveying and Geoinformatics, University of Calabar, Calabar 540242, Nigeria
3. Department of Tourism Studies, University of Calabar, Calabar 540242, Nigeria
4. Department of Environmental Education, University of Calabar, Calabar 540242, Nigeria
5. Department of Geology and Geophysics, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
6. Department of Biology and Geology, Physics and Inorganic Chemistry, ESCET, Universidad Rey Juan Carlos, Móstoles, 28933 Madrid, Spain
7. Geology Department, Faculty of Science, Suez University, Suez 43518, Egypt