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Entstehung und Zerfall von Superkontinenten

Entstehung und Zerfall von Superkontinenten. Alfred Wegener 1880-1930. Kontinentalverschiebungstheorie treibende Kräfte: Zentrifugalkraft, Gravitationskraft von Mond und Sonne  Gezeiten. Pangea Rekonstruktion Alfred Wegener. 300 Ma.

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Entstehung und Zerfall von Superkontinenten

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  1. Entstehung und Zerfall von Superkontinenten Alfred Wegener 1880-1930 Kontinentalverschiebungstheorie treibende Kräfte: Zentrifugalkraft, Gravitationskraft von Mond und Sonne  Gezeiten

  2. Pangea Rekonstruktion Alfred Wegener 300 Ma Damaliges Paradigma: Fixismus – Kontraktionstheorie - Landbrücken

  3. Best fit of the passive margins of the Atlantik (Bullard 1965)

  4. Rodinia – der letzte Präkambrische Superkontinent (~ 1Ga) Grenville Orogenesen

  5. Tethys von einer zu drei Schwestern von Okeanos Proto-Tethys Paläo-Tethys Stampfli & Borel 2000

  6. Stampfli & Borel 2000 Neo-Tethys

  7. Der Teufel liegt im Detail

  8. Diachrone Schließung des Rheic Ozeans Variszische Kollision 400 – 300 Ma

  9. Finale Kollision Gondwanas im Perm

  10. Gondwana Breakup ! Film „Gondwana.exe“ ausführen !

  11. Scoring hotspots: the Plume and Plate paradigms Don L. Anderson Seismological Laboratory, Caltech, Pasadena, California 91125,USA dla@gps. caltech. edu

  12. Fig. 1. Phanerozoic plate reconstructions modifed from [8,11,23], with addition of MOR systems. A major (Pangaean) cell, bound by a circumferential subduction zone and containing all continents, contracts through the Palaeozoic and expands thereafter. Another (Panthalassan) cell contains exclusively oceanic plates within the within the Panthalassan/Pacific ocean. Collins, 2003

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