1. Department of Geology, V.O. Chidambaram College, Tuticorin 628008, India
2. Water Research Center, Kuwait Institute for Scientific Research, Kuwait City 13109, Kuwait
3. Department of Geology, Ravenshaw University, Cuttack 753003, India
4. Department of Hydrology, University of Zululand, Kwa Dlangezwa 3886, South Africa