Geophysical exploration of the Kalahari Suture Zone

Mesoproterozoic intraplate magmatism in the Kalahari Craton: A review

“…1) are defined by prominent aeromagnetic and gravity anomalies in the Kalahari Desert in western Botswana and are inferred to represent thick mafic/ultramafic layered intrusions (Reeves, 1978b;Meixner and Peart, 1984;Carney et al, 1994;Brett et al, 2000). The uppermost parts of the Xade Complex have been reached by two boreholes (CKP-6 and CKP-6A), which encountered mafic rocks overlain by Karoo strata (Meixner and Peart, 1984).…”

“…Based on the geophysical data, the main part of the Tshane Complex is an elongate intrusion >300 km in length, with vertical or steeply dipping sides that may extend to substantial depths (Reeves, 1978b;Meixner and Peart, 1984;Brett et al, 2000). Borehole CKP-8C (Fig.…”

U-Pb zircon age of the upper Palapye group (Botswana) and regional implications

“…In southern Botswana, the Olifantshoek Supergroup is cut by the Tshane Gabbroic Complex, located along a north-south-trending geophysical anomaly known as the Kalahari ''Suture Zone'' in western Botswana (Reeves, 1978;Reeves, 1985;Lü dtke et al, 1986;Mason, 1998;Brett et al, 2000). The Tshane gabbro yielded an Ar-Ar plagioclase plateau age of 1071 ± 11 Ma (Hoffe, 1996).…”

SHRIMP U-Pb zircon ages of granitoids from the Western Domain of the Kaapvaal Craton, Southeastern Botswana: implications for crustal evolution

“…The northern margin of the Kaapvaal Craton is currently placed at the Zoetfontein-Palala shear zone (Hutchins and Reeves, 1980) whilst its western boundary is the Kalahari Suture Zone/Palaeoproterozic Kheis belt (Brett et al, 2000;Key and Ayers, 2000). In the northeast, the Limpopo belt separates the Kaapvaal Craton from the Zimbabwe Craton (Ranganai et al, 2002).…”