1. Geologic map of the west-central Barberton Greenstone Belt, South Africa [cartographic material] Yale Public content 2012. 2012-12-11T14:15:32Z. 2013-03-18T22:31:00Z. Lowe, Donald R., 1942-. Geological Society of America. English. Public. Barberton Greenstone Belt (South Africa and Swaziland), South Africa, Barberton (Region), and Transvaal.