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Gary Stevens (et Jean-François Moyen , Alex Kisters, Johann Diener)

Une orog é n è se subduction-collision à l'arch é en : m é tamorphisme HP-BT à 3.2 Ga à Barberton (Afrique du Sud). Gary Stevens (et Jean-François Moyen , Alex Kisters, Johann Diener). Stellenbosch University, South Africa. Percival, 1994 In Condie ed. “Archean crustal evolution”.

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Gary Stevens (et Jean-François Moyen , Alex Kisters, Johann Diener)

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  1. Une orogénèse subduction-collisionà l'archéen : métamorphisme HP-BT à 3.2 Ga à Barberton (Afrique du Sud) Gary Stevens (et Jean-François Moyen, Alex Kisters, Johann Diener) Stellenbosch University, South Africa

  2. Percival, 1994 In Condie ed. “Archean crustal evolution”

  3. 2.9 – 2.7 Ga granites 3.1 Ga granites & syenites Moodies Fig Tree Onverwacht Ca. 3.2 Ga TTG Ca. 3.4 Ga TTG « Ancient gneisses » (3.6 – 3.4 Ga)

  4. Diener, 2004

  5. “Inyoni shear zone”

  6. Inyoni shear zone

  7. 500 mm Ab Gt Qz Gt Ab

  8. Ep Gt Cpx Gt Ab 200 mm

  9. 500 mm

  10. 100 mm

  11. Ep+Qz Gt Amp 500 mm

  12. Percival, 1994 In Condie ed. “Archean crustal evolution”

  13. (Pluton de Nelshoogte, syn-extension ?) Komatii fault Bloc “inférieur” (bloc de Stolzburg)

  14. Diener, 2004

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