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Act 2 LATE PROTEROZOIC SEDIMENTATION AND RIFTING

Act 2 LATE PROTEROZOIC SEDIMENTATION AND RIFTING. Grand Canyon Supergroup. basalt. Block-faulted mountains. Normal faults. Grand Canyon Supergroup. Act 3 “The DCM” PALEOZOIC SEDIMENTATION. The Great Unconformity. Paleozoic. Proterozoic. The Great Unconformity. Paleozoic. Proterozoic.

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Act 2 LATE PROTEROZOIC SEDIMENTATION AND RIFTING

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  1. Act 2 LATE PROTEROZOIC SEDIMENTATION AND RIFTING

  2. Grand Canyon Supergroup basalt

  3. Block-faulted mountains Normal faults

  4. Grand Canyon Supergroup

  5. Act 3 “The DCM” PALEOZOIC SEDIMENTATION

  6. The Great Unconformity Paleozoic Proterozoic

  7. The Great Unconformity Paleozoic Proterozoic

  8. Angular unconformity? Disconformity? Nonconformity?

  9. Angular unconformity

  10. Shinumo Quartzite “islands” Tapeats Sandstone Grand Canyon Supergroup

  11. The Great Unconformity

  12. EVENTS Pangaea Pannotia

  13. EVENTS Pangaea Grand Canyon Sequence Pannotia

  14. EVENTS Pangaea Pannotia

  15. EVENTS Pangaea Orogeny Orogeny Slower Sea Floor Spreading Orogeny Orogeny Rapid Sea Floor Spreading Sediment Transfer into Oceans Pannotia

  16. Deposition

  17. Deposition transgressions

  18. Unconformities (no sediment record)

  19. Unconformities (no sediment record) regressions

  20. 4th 4th Cratonic sequences 3rd 3rd 2nd 2nd 1st 1st

  21. KNOW THE CANYON’S HISTORY STUDY ROCKS TRULY MADE BY TIME 4th 3rd 2nd 1st

  22. The First Transgression

  23. EVENTS Pangaea Rapid Sea Floor Spreading Sediment Transfer into Oceans Pannotia

  24. What kind of unconformity is it? Tapeats Sandstone Vishnu schist

  25. What kind of unconformity is it? Nonconformity

  26. Tidal lenses

  27. Tapeats Sandstone

  28. Name?

  29. (hint)

  30. Bright Angle Shale

  31. Typical exposures Bright Angel Shale

  32. Redwall Muav Tonto Platform Bright Angel Tapeats

  33. Good exposures where rapidly eroded.

  34. Muav Limestone on Kaibab Trail

  35. Muav Limestone at Royal Arch

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