Ongeluk basaltic andesite formation in Griqualand West , South Africa : submarine alteration in a 2222 Ma Proterozoic sea

  title={Ongeluk basaltic andesite formation in Griqualand West , South Africa : submarine alteration in a 2222 Ma Proterozoic sea},
  author={Prerumbrinn Reseurth and D. H. Cornell},
The Ongeluk lavas form part of the Palaeoproterozoic Transvaal-Griqualand West supracrustal sequence of the Archaean Kaapvaal Craton of South Africa. They form a thick shallow-marine volcanic sequence of pillow lava, massive flows and hyaloclastite, which together with their comagmatic subaerial Hekpoort correlate, once covered most of the Craton. In this study the magmatic composition and alteration features of Ongeluk samples were distinguished using geochemistry and radiogenic isotopes. The… CONTINUE READING


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