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Showing 1 to 1 of 1 for “"siliceous igneous rocks"”.

  1. The discovery of baddeleyite (ZrO2) and chrome spinel in the basal Rooiberg Group of the 2.057 Ga Bushveld Complex, South Africa: Implications for the impact and igneous scenarios for the petrogenesis of the Rooiberg Group.

    Tegtmeier, Eric

    … four formations that comprise the 4-6 km thick siliceous Rooiberg Group of the 2.057 Ga Bushveld Complex, South Africa. The discovery of composite zircon-baddeleyite grains and chromite in the Basal Rhyolite demands a reassessment of proposed scenarios for its petrogenesis. These scenarios …

    unm Repository record