 The general stratigraphy of the belt is, from base upwards, a thick sequence of felsic orthogneiss composed of fragmental to glomerocrystic feldspar gneiss, known as the footwall felsic sequence; the ultramafic units of komatiite affinity, 'overlain' by grunerite-magnetite-quartz-amphibole banded iron formation of the Honman Formation, tholeiitic basalt and metasedimentary rocks.Regionally, several subvolcanic lopolithic layered intrusions have been identified from mapping and drilling.These are interpreted to represent the feeder conduits to extrusive ultramafic and mafic igneous rocks stratigraphically higher in the belt.