Geochronological constraints on the eastern margin of the Tanzanian Craton in the Dodoma-Mpwapwa area.

The position and nature of the eastern margin of the Tanzanian Craton in central Tanzania is poorly understood, especially with regard to its relationships with the Palaeoproterozoic Usagaran Belt and the Neoproterozoic Western Granulites of the East African Orogen (e.g. Reddy et al., 2003; Cutten et al., 2006; Fritz et al., 2009). Transects have been undertaken across a ca. 45 km N-S crustal section east of Dodoma, Central Tanzania, in order to ascertain the position, nature and geochronology of the eastern margin of the Tanzanian Craton and its relationship with a sequence of high-grade supracrustal gneisses to the east, known as the Mpwapwa Group.