a quick presentation
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The Bushveld complex. A quick presentation. The Bushveld Complex, South Africa. The biggest: 300-400 km x 9 km. The Red Granite intruded 50-100 Ma afterwards. - PowerPoint PPT PresentationTRANSCRIPT
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A quick presentation
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The Bushveld Complex, South Africa
The biggest: 300-400 km x 9 km
The Red Graniteintruded 50-100 Maafterwards
Figure 12-5. Simplified geologic Map and cross section of the Bushveld complex. After Willemse (1964), Wager and Brown (1968), and Irvine et al. (1983).
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Bushveld ComplexThe World’s Biggest Layered Igneous Intrusion
Floor LZ LCZUCZ MZ UZ
Panorama of the Olifants River Valley, NE Bushveld
Jodie’s lecture - 2006
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Jodie’s lecture - 2006
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Intrusive sill of Bushveld dolerite in Transvaal sequenceNear Burgersfort
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Lower zone Peridotites/pyroxenites(Jagdlust, Burgersfort-Polokwane Road)
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Lower zone Peridotites/pyroxenites(Jagdlust, Burgersfort-Polokwane Road)
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The critical zone overlooking the lower zone (left)(Burgersfort-Polokwane Road)
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Different pyroxenite types, Critical zone(Mandaagshoek, near Burgersfort)
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Norite and anorthosite, Critical zone(Mandaagshoek, near Burgersfort)
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Layered anorthosite, Critical zone(Tweefontein, Lydenburg-Burgersfort area)
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Anorthosite and chromitite, Critical zone(Dwars River, Lydenburg-Burgersfort area)
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UG3 Chromitite, Critical zone(Mandaagshoek, near Burgersfort)
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Massive black gabbros (« Belfast black »), Main zone(Near Stoffberg, Belfast area)
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Modal layering in gabbros, Main zone(Lydenburg-Burgersfort area)
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Gabbros and magnetite (Main Magnetite Layer), Upper zone(Magnet Heights)
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Upper zone gabbronorite(Magnet Heights)
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Main magnetite layer, Upper zone(Magnet Heights)
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In-situ differentiationOr successive magma batches?
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Isotopic evolutionISr(2.05 Ga)