Opara A.I.

Department of Geosciences, Federal University of Technology, PMB 1526 Owerri

Emberga T.T.

Department of Physics and Industrial Physics, Federal Polytechnic Nekede, Owerri

Oparaku O.I.

Department of Geosciences, Federal University of Technology, PMB 1526 Owerri

Essien A.G.

Department of Geosciences, Federal University of Technology, PMB 1526 Owerri

Onyewuchi R.A.

Department of Geology, University of Portharcourt, Choba, Rivers State

Echetama H.N.

Department of Geosciences, Federal University of Technology, PMB 1526 Owerri

Muze N.E.

Department of Geosciences, Federal University of Technology, PMB 1526 Owerri

Onwe R.M

Department of Gelogy/Geophysics, Federal University Ndufu-Alike Ikwo, Abakaliki