georefid:1996-054643SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=1996-054643<gco:CharacterString>Isotope characteristics of the Okenyenya igneous complex, northwestern Namibia; constraints on the composition of the early Tristan Plume and the origin of the EM 1 mantle component</gco:CharacterString>1996-01-01publicationgeorefid:1996-054643Milner, Simon C.University of Cape Town, Department of Geological Sciences, Rondebosch, South Africaauthorle Roex, Anton P.Geological Survey, Ministry of Mines and Energy, Windhoek, NamibiaauthorElsevier, Amsterdam, NetherlandspublisherdocumentHardcopyEarth and Planetary Science Letters141 (1-4)277-291completedIsotope geochemistryIgneous and metamorphic petrologyAfricaalkalic compositionalkaline earth metalsbasaltsenrichmentEtendeka Groupgeochemistryigneous rocksintrusionsisotope ratiosisotopesleadmantlemantle plumesMesozoicmetalsNamibiaNd-144/Nd-143neodymiumnorthwestern NamibiaOkenyenya ComplexPb-206/Pb-204Pb-207/Pb-204Pb-208/Pb-204plate tectonicsplutonic rocksradioactive isotopesrare earthsSouthern AfricaSr-87/Sr-86stable isotopesstrontiumtholeiitic compositionTristan Plumeupwellingvolcanic rocksEnglishgeoscientificInformation13.000017.0000-22.0000-18.0000