 Examples include the Medcalf Ultramafic Intrusion, a 3.5 km long, ~1 km thick pile of gabbroic to pyroxenitic cumulates which contain subeconomic stratiform vanadiferous magnetite deposits.The extrusive and intrusive igneous rocks are underlain and intruded by a series of I-type granite intrusions and granite domes of c. 2.65 Ga age.A late dyke swarm of Proterozoic age intrudes the belt, most notably the Jimberlana Dyke which attains a thickness of some 600m and transects the Emily Ann and Maggie Hays orebodies.