1 / 19

Large Igneous Provinces

LIP. Large Igneous Provinces. Die großen magmatischen Provinzen der Erde. LIP´s of the World. Siberian traps 250 Ma (Late Permian). Viluy traps 360 Ma (Late Devonian). Emeishan traps 258 Ma (Late Permian). Columbia River Basalt 16 Ma (Early Miocene). Deccan traps

gates
Download Presentation

Large Igneous Provinces

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. LIP Large Igneous Provinces Die großen magmatischen Provinzen der Erde

  2. LIP´s of the World Siberian traps 250 Ma (Late Permian) Viluy traps 360 Ma (Late Devonian) Emeishan traps 258 Ma (Late Permian) Columbia River Basalt 16 Ma (Early Miocene) Deccan traps 65 Ma (Late Cretaceous) Ethiopian and Yemen traps, 30 Ma (Oligocene) Madagascar traps, ~ 90 Ma (Mid Cretaceous) Karoo and Ferrar traps, 184 Ma (Mid Jurassic) Parana and Etendeka traps, 132 Ma (Early Cretaceous) North Atlantic Tertiary Volcanic Province, 55 & 60 Ma (Paleocene) Continental Flood Basalts Trap

  3. LIP Large Igneous Provinces Ontong–Java plateau 117, 98, 93 Ma (Mid-Late Cretaceous Ozeanische Plateaus

  4. LIP Large Igneous Provinces

  5. Spuren von heißen Flecken Crough 1983

  6. Hot Spot Track – der Hawaii – Emperor - Seamount Kette 81 Ma Emperor Inselkette Hawaii Inselkette heute aktiv Spur wird kontinuierlich jünger in Richtung Hawaii Hawaii Karte der magnetischen Anomalien Spur ist unabhängig von der Bewegung der Lithosphärenplatten – kreuzt die magnetischen Anomalien der ozeanischen Kruste

  7. Columbia River Basalt 16 Ma (Early Miocene) & Yellowstone Hot Spot Fig. 1. Map showing the distribution of the Colombia River basalts (CRBs) and track of the Yellowstone hot spot. According to Pierce and Morgan [14], activity of the CRBs started due to the arrival of gigantic plume head of the Yellowstone hot spot ca. 16 Ma ago. The plume hit the boundary between Oregon, Idaho and Nevada where rhyolite volcanism occurred due to crustal anatexsis. Much of the basalt magmas, however, traveled to the north through 1000 km long NS rift system and drained at the boundary between Washington and Oregon States. Simplified after fig. 1 of Pierce and Morgan [14].

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

  9. Klassisches Modell: Mantelkonvektion betrifft den gesamten Mantel

  10. Alternative: zwei unabhängige Konvektionssysteme im unteren und oberen Mantel

  11. Tomographisches Modell des Erdmantels 1350 km Tiefe p-Wellen s-Wellen van der Hilst et al. 1997

  12. Miner Petrol DOI 10.1007/s00710-009-0068-z Structure, mineralogy and dynamics of the lowermost mantle Reidar G. Trønnes

  13. Beispiel für Konvektionsmodell im Oberen Mantel Cartoon illustrating the architecture of the subduction zones and the related pattern of mantle convection in the Mediterranean region. C Faccenna & TW Becker Nature465, 602-605 (2010) doi:10.1038/nature09064

  14. Noch eine Alternative Holden & Vogt 1977

  15. Ein streng mechanistischer Ansatz für Plattentektonik Holden & Vogt 1977

More Related