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    • Rhyolitic volcanism in the Onverwacht Group, Barberton Greenstone Belt 

      Diergaardt, Byron Nico (Stellenbosch : Stellenbosch University, 2013-03)
      ENGLISH ABSTRACT: The source of the K2O in the K2O-rich ~3.45 Ga felsic intrusive rocks of the H6 unit in the Hooggenoeg Formation of the Onverwacht Group in the Barberton Granite Greenstone Terrain (BGGT) is examined in ...