Geology of Zimbabwe

It also incorporates greenstone belts comprising mafic, ultramafic and felsic volcanics which are associated with epiclastic sediments and iron formations.

The Zimbabwe Craton is intruded by an elongate ultramafic/mafic igneous complex known as the Great Dyke which runs for more than 500 km along a SSW/NNE oriented graben.

[2] The oldest supracrustal rocks are the Sebakwian Group (3.5 Ga) exposed around Shurugwi and Mashava, and northwest of Gweru, within the central craton.

[3][4] By 1982, 123 mines had produced 155 tonnes of gold from the stratabound iron-formations of the Sebakwian, and Lower and Upper Greenstones.

Gold, platinum group metals and chromium are Zimbabwe's key mineral resources.