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Today GUEST LECTURER Eriks Puris Overview Mesozoic Geology Adding Pieces to the Collage

Today GUEST LECTURER Eriks Puris Overview Mesozoic Geology Adding Pieces to the Collage. Figure 23.02: Divisions of the Mesozoic Era and key geologic events. Mesozoic Geology. Global Tectonics Climate Orogenies in Western North America. Fig. 23.03 a: Early Triassic (250 m.y.a).

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Today GUEST LECTURER Eriks Puris Overview Mesozoic Geology Adding Pieces to the Collage

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  1. Today • GUEST LECTURER Eriks Puris • Overview Mesozoic Geology • Adding Pieces to the Collage

  2. Figure 23.02: Divisions of the Mesozoic Era and key geologic events

  3. Mesozoic Geology • Global Tectonics • Climate • Orogenies in Western North America

  4. Fig. 23.03 a: Early Triassic (250 m.y.a)

  5. Figure 23.03 b: Late Triassic (200 m.y.a)

  6. Figure 23.03 c: Jurassic (160 m.y.a)

  7. Figure 23.03 d: Late Jurrasic to Early Cretaceous (130 m.y.a)

  8. Fig. 23.03 e: Late Cretaceous, End of Mesozoic (66 m.y.a)

  9. Ice House and Green House Worlds W. W. Norton. After Kump et al., 1999

  10. West Coast Orogenies • Sonoman • Cordillearan • Nevadan • Sevier • Laramide

  11. Figure 23.10 : Sonoman Orogeny • Late Permian-Early Tertiary • 250-225 m.y.a. • Westward Subduction • Accreation of Sonomia

  12. Figure 23.10: Nevadan Orogeny • Late Jurrassic • 160-140 m.y.a. • Eastward Subduction • Granite Batholiths

  13. Fig. 23.11: Sierra Nevada Mountains

  14. Figure 23.10: Sevier and Laramide Orogenies

  15. Figure 23.12b: Sevierorogeny deformation

  16. Fig. 23.12 a: Mountains in Sevier thrust belt

  17. Figure 23.14: Buoyant subduction model for the Laramide orogeny

  18. Sevier and Laramide Orogenies • Late Cretaceous • Sevier 100-80 m.y.a. • Laramide 80-60 m.y.a. • Continued Eastward Subduction • Fold and thrust belts • Basement Uplifts • Don’t Fit Simple Plate Tectonic Model • Shallow Subduction?

  19. Fig.23.09: Growth of West CoastCrustal terranes in the Cordillera

  20. Adding Pieces to the Collage • Module 6 • Northwest Origins Burke Museum • North Cascades Geology

  21. For Monday 11/29 • Reading-Chapter 24

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