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HOW DO ALL THESE BOUNDARIES WORK TOGETHER? PACIFIC NORTHWEST AND SOUTHWEST BRITISH COLUMBIA

HOW DO ALL THESE BOUNDARIES WORK TOGETHER? PACIFIC NORTHWEST AND SOUTHWEST BRITISH COLUMBIA. HOW DO ALL THESE BOUNDARIES WORK TOGETHER? PACIFIC NORTHWEST AND SOUTHWEST BRITISH COLUMBIA. North American Plate Movement. HOW DO ALL THESE BOUNDARIES WORK TOGETHER?

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HOW DO ALL THESE BOUNDARIES WORK TOGETHER? PACIFIC NORTHWEST AND SOUTHWEST BRITISH COLUMBIA

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  1. HOW DO ALL THESE BOUNDARIES WORK TOGETHER? PACIFIC NORTHWEST ANDSOUTHWEST BRITISH COLUMBIA

  2. HOW DO ALL THESE BOUNDARIES WORK TOGETHER? PACIFIC NORTHWEST ANDSOUTHWEST BRITISH COLUMBIA North American Plate Movement

  3. HOW DO ALL THESE BOUNDARIES WORK TOGETHER? PACIFIC NORTHWEST ANDSOUTHWEST BRITISH COLUMBIA Pacific Plate Movement And Mendico Fault (San Andreas extension)

  4. HOW DO ALL THESE BOUNDARIES WORK TOGETHER? PACIFIC NORTHWEST ANDSOUTHWEST BRITISH COLUMBIA SMALL “MID-OCEAN” RIDGES DIVERGENT GORDA RIDGE

  5. HOW DO ALL THESE BOUNDARIES WORK TOGETHER? PACIFIC NORTHWEST ANDSOUTHWEST BRITISH COLUMBIA SMALL “MID-OCEAN” RIDGES DIVERGENT JUAN DE FUCA RIDGE

  6. HOW DO ALL THESE BOUNDARIES WORK TOGETHER? PACIFIC NORTHWEST ANDSOUTHWEST BRITISH COLUMBIA SMALL “MID-OCEAN” RIDGES DIVERGENT EXPLORER RIDGE

  7. HOW DO ALL THESE BOUNDARIES WORK TOGETHER? PACIFIC NORTHWEST ANDSOUTHWEST BRITISH COLUMBIA SEAFLOOR SPREADING AND TRANSFORM FAULT

  8. HOW DO ALL THESE BOUNDARIES WORK TOGETHER? PACIFIC NORTHWEST ANDSOUTHWEST BRITISH COLUMBIA SEAFLOOR SPREADING AND TRANSFORM FAULT

  9. HOW DO ALL THESE BOUNDARIES WORK TOGETHER? PACIFIC NORTHWEST ANDSOUTHWEST BRITISH COLUMBIA SEAFLOOR SPREADING AND TRANSFORM FAULT

  10. HOW DO ALL THESE BOUNDARIES WORK TOGETHER? PACIFIC NORTHWEST ANDSOUTHWEST BRITISH COLUMBIA North American Plate (black and white) CONVERGING (white dashes) with Juan de Fuca Plate (blue and yellow).

  11. PACIFIC NORTHWEST CASCADE MOUNTAINS OLYMPIC MOUNTAINS COAST RANGE CASCADE MOUNTAIN PACIFIC OCEAN PUGET- WILLAMETTE LOWLANDS JUAN DE FUCA PLATE NORTH AMERICAN PLATE

  12. PLATES LOCK IN PLACE JUAN DE FUCA PLATE NORTH AMERICAN PLATE

  13. BETWEEN EARTHQUAKES CONVERGENCE CAUSES UPWARD BUCKLING OF COASTAL AREAS Energy stored as in a bent cane. JUAN DE FUCA PLATE NORTH AMERICAN PLATE

  14. DURING ERTHQUAKES PLATES UNLOCK Coastline subsides Energy in earthquake and tsunami JUAN DE FUCA PLATE NORTH AMERICAN PLATE

  15. BETWEEN EARTHQUAKES Plates lock back together After release of energy by earthquake Coastline slowly Re-emerges. JUAN DE FUCA PLATE NORTH AMERICAN PLATE

  16. Tsunami Deposits, Southern Chile. Dark bands are organic soils, lighter greys are marine sands deposited by tsunamis. Source: Rhodes, Tuttle, Horton, Doner, Kelsey, Nelson and Cisternas, EOS, 87, May 2006.

  17. TSUNAMI MARCH 2011

  18. Displacement during Earthquake March 2011. Source: Simons et al., 2011 Science Express

  19. PUEGET SOUND 3,500BP Tidal Marsh

  20. PUEGET SOUND 3,300BP Earthquake

  21. PUEGET SOUND 3,200 BP Emergence

  22. PUEGET SOUND 3,000 BP Forested Upland

  23. PUEGET SOUND 3,000 BP Earthquake Submersion

  24. PUEGET SOUND 2,700 BP Earthquake Submergence

  25. PUEGET SOUND 400 Emergence Forest

  26. PUEGET SOUND 400 Earthquake Submersion

  27. PUEGET SOUND 700 Emergence

  28. PUEGET SOUND 700 Earthquake Submersion

  29. PUEGET SOUND 900 Emergence

  30. PUEGET SOUND 900 Earthquake

  31. PUEGET SOUND 1700 Emergence Forested Uplands

  32. PUEGET SOUND 1700 Earthquake Submersion

  33. Simulation of 1700 Earthquake and Tsunami

  34. PUEGET SOUND 2000 Emergence

  35. PUEGET SOUND AVERAGE LENGTH OF TIME BETWEEN EARTHQUAKES 300 yrs

  36. PUEGET SOUND AVERAGE LENGTH OF TIME BETWEEN EARTHQUAKES 300 yrs ? 1700

  37. SUBSTUTUTE DEPTH FOR TIME Present TIME 1700 900 3300BP 3000BP 700 900 1700 700 TIME DEPTH Geologists’ Principle of Superposition 3000BP 3300BP

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