Crustal and Upper Mantle Imaging of Botswana Using Magnetotelluric Method

We used magnetotelluric data from 352 sites in Botswana to derive a country-wide electrical conductivity model of the crust and upper mantle structure. A robust methodological scheme 3D inversion were with unprecedented spatial coverage. The results show interesting features, including major cratonic blocks mobile belts Botswana. distinctive resistive structure was imaged southwest Botswana, which suggests existence Maltahohe microcraton as separate unit proposed by other studies. Furthermore, gives new insight into extension East African Rift System incipient rifting Okavango Zone. In northern shows highly conductive beneath Zone, connects deeper that we attribute due its vicinity Lake Kariba, last surface expression rift system. suggest ascending fluids or melt causes weakening lithosphere plays significant role continental