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Today Hot Spots Past Plate Motions Review TEST 1 LAB: Describing Minerals Wednesday TEST 1

Today Hot Spots Past Plate Motions Review TEST 1 LAB: Describing Minerals Wednesday TEST 1 Chemistry of Minerals READ Chapter 5 Next Monday Rock Forming Minerals LAB Identifying Minerals. Hot Spots. Global Distribution of Active Volcanoes.

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Today Hot Spots Past Plate Motions Review TEST 1 LAB: Describing Minerals Wednesday TEST 1

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  1. Today • Hot Spots • Past Plate Motions • Review TEST 1 • LAB: Describing Minerals • Wednesday • TEST 1 • Chemistry of Minerals • READ Chapter 5 • Next Monday • Rock Forming Minerals • LAB Identifying Minerals

  2. Hot Spots

  3. Global Distribution of Active Volcanoes Source: http://www.volcano.si.edu/world/location.cfm

  4. 09_16b.jpg

  5. 04_22.jpg

  6. 04_21.jpg

  7. 04_23b.jpg

  8. 04_23a.jpg animation

  9. 04_22.jpg

  10. Past Plate Positions

  11. Dating the Sea Floor (Fig. 4.11) animation

  12. Magnetometer Fig 3.24a

  13. Magnetic Field Strength near PNW Coast Fig 3.24b

  14. Magnetic Field Strength Portland Source: http://wrgis.wr.usgs.gov/docs/gump/portland/portland.html

  15. Magnetism of a Lava Flow Sequence (Fig 3.25)

  16. Magnetic Field Flips Fig. 3.26

  17. Magnetic Reversal Time Line(Fig 3.27)

  18. Geomagnetic TimescaleFig. 3.30c

  19. Cause of Reversals? Fig 3.27 http://www.es.ucsc.edu/~glatz/geodynamo.html

  20. Fig 3.28 animation

  21. 03_30.jpg

  22. Dating the Sea Floor (Fig. 4.11) animation

  23. 04_33.jpg Animation of Continental Drift

  24. Cause of Plate Tectonics? Fig. 4.32

  25. Convection in Mantle Fig. 4.28

  26. C_12.jpg

  27. C_16.jpg

  28. Ridge Push and/or Trench Pull Fig. 4.29

  29. Super Continent Cycle? http://www.uwgb.edu/dutchs/platetec/plhist94.htm#750my http://www.gps.caltech.edu/~gurnis/Movies/Science_Captions/aggdisp.html

  30. West Coast TectonicsFig 4.19

  31. PNW Earthquakes& Plates

  32. 3-D view: http://spike.geophys.washington.edu/SEIS/EQ_Special/WEBDIR_01022818543p/hypos.html

  33. Evidence for Past Subduction Zone Earthquakes?

  34. What happens during subduction zone earthquake? Locking and Bulging GPS: ½ in/year subsidence uplift Rebound

  35. Ghost Forest

  36. Coastal evidence of subduction zone earthquakes And deposition by tsunami

  37. Peat Layer topped by Tsunami Sand-Oregon

  38. Orphan Tsunami in Japan Jan 29, 1700

  39. Last Subduction Zone Earthquakes • January 26th 1700 • Coast Line from Vancouver Island to Northern California subsided approx. 6ft. • M9! (100 times Nisqually earthquake)

  40. How frequent? One every 300-800 years. Last one 300 y. a.

  41. TEST 1 • Chapters 2, 3, 4, prelude, interlude A & E

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