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BOUNDARIES WORK TOGETHER?
HOW DO ALL THESE BOUNDARIES WORK TOGETHER? PACIFIC NORTHWEST AND SOUTHWEST BRITISH COLUMBIA
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BOUNDARIES WORK TOGETHER?
HOW DO ALL THESE BOUNDARIES WORK TOGETHER? PACIFIC NORTHWEST AND SOUTHWEST BRITISH COLUMBIA North American Plate Movement
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BOUNDARIES WORK TOGETHER?
HOW DO ALL THESE BOUNDARIES WORK TOGETHER? PACIFIC NORTHWEST AND SOUTHWEST BRITISH COLUMBIA Pacific Plate Movement And Mendico Fault (San Andreas extension)
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BOUNDARIES WORK TOGETHER?
HOW DO ALL THESE BOUNDARIES WORK TOGETHER? PACIFIC NORTHWEST AND SOUTHWEST BRITISH COLUMBIA SMALL “MID-OCEAN” RIDGES DIVERGENT GORDA RIDGE
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BOUNDARIES WORK TOGETHER?
HOW DO ALL THESE BOUNDARIES WORK TOGETHER? PACIFIC NORTHWEST AND SOUTHWEST BRITISH COLUMBIA SMALL “MID-OCEAN” RIDGES DIVERGENT JUAN DE FUCA RIDGE
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BOUNDARIES WORK TOGETHER?
HOW DO ALL THESE BOUNDARIES WORK TOGETHER? PACIFIC NORTHWEST AND SOUTHWEST BRITISH COLUMBIA SMALL “MID-OCEAN” RIDGES DIVERGENT EXPLORER RIDGE
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BOUNDARIES WORK TOGETHER?
HOW DO ALL THESE BOUNDARIES WORK TOGETHER? PACIFIC NORTHWEST AND SOUTHWEST BRITISH COLUMBIA SEAFLOOR SPREADING AND TRANSFORM FAULT
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BOUNDARIES WORK TOGETHER?
HOW DO ALL THESE BOUNDARIES WORK TOGETHER? PACIFIC NORTHWEST AND SOUTHWEST BRITISH COLUMBIA SEAFLOOR SPREADING AND TRANSFORM FAULT
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BOUNDARIES WORK TOGETHER?
HOW DO ALL THESE BOUNDARIES WORK TOGETHER? PACIFIC NORTHWEST AND SOUTHWEST BRITISH COLUMBIA SEAFLOOR SPREADING AND TRANSFORM FAULT
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BOUNDARIES WORK TOGETHER?
HOW DO ALL THESE BOUNDARIES WORK TOGETHER? PACIFIC NORTHWEST AND SOUTHWEST BRITISH COLUMBIA North American Plate (black and white) CONVERGING (white dashes) with Juan de Fuca Plate (blue and yellow).
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PACIFIC NORTHWEST JUAN DE FUCA NORTH AMERICAN PLATE MOUNTAINS
CASCADE MOUNTAIN MOUNTAINS PUGET- WILLAMETTE LOWLANDS OLYMPIC MOUNTAINS COAST RANGE NORTH AMERICAN PLATE JUAN DE FUCA PACIFIC OCEAN
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PLATES LOCK IN PLACE JUAN DE FUCA PLATE NORTH AMERICAN PLATE
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BETWEEN EARTHQUAKES CONVERGENCE CAUSES UPWARD BUCKLING OF
COASTAL AREAS Energy stored as in a bent cane. JUAN DE FUCA PLATE NORTH AMERICAN PLATE
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DURING ERTHQUAKES PLATES Coastline UNLOCK subsides
Energy in earthquake and tsunami JUAN DE FUCA PLATE NORTH AMERICAN PLATE
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Plates lock back together After release of energy by
BETWEEN EARTHQUAKES Plates lock back together After release of energy by earthquake Coastline slowly Re-emerges. JUAN DE FUCA PLATE NORTH AMERICAN PLATE
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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.
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TSUNAMI MARCH 2011
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Displacement during Earthquake March 2011. Source: Simons et al., 2011
Science Express
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PUEGET SOUND 3,500BP Tidal Marsh
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PUEGET SOUND 3,300BP Earthquake
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PUEGET SOUND 3,200 BP Emergence
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PUEGET SOUND 3,000 BP Forested Upland
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PUEGET SOUND 3,000 BP Earthquake Submersion
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PUEGET SOUND 2,700 BP Earthquake Submergence
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PUEGET SOUND 400 Emergence Forest
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PUEGET SOUND 400 Earthquake Submersion
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PUEGET SOUND 700 Emergence
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PUEGET SOUND 700 Earthquake Submersion
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PUEGET SOUND 900 Emergence
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PUEGET SOUND 900 Earthquake
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PUEGET SOUND 1700 Emergence Forested Uplands
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PUEGET SOUND 1700 Earthquake Submersion
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Simulation of 1700 Earthquake and Tsunami
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PUEGET SOUND 2000 Emergence
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PUEGET SOUND AVERAGE LENGTH OF TIME BETWEEN EARTHQUAKES 300 yrs
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PUEGET SOUND AVERAGE LENGTH OF TIME BETWEEN EARTHQUAKES 300 yrs ? 1700
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SUBSTUTUTE DEPTH FOR TIME
1700 900 700 3300BP 3000BP Present Geologists’ Principle of Superposition
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