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Transcript
The Making of Northwest Landscape Presented by Bruce Barcklow Geological Processes • • • • • • • Volcanic Glacial Exotic Terranes (North Cascades, Olympics) Batholiths (Mount Stuart) Basalt Flows Catastrophic Floods Plate Tectonics and Continental Uplift are the major underlying forces Mount Rainier from First Burroughs Mount Baker Glacier Peak – Chocolate Glacier in Center Adams False Summit from Lunch Counter St. Helen’s Caldera Wilson and Nisqually Glaciers at Rainier Nisqually Glacier Glacial Moraine – Easton Glacier, Mt. Baker Rattlesnake Ridge and Snoqualmie Valley from Mt. Si Trail to Sahale Arm – North Cascades Ptarmigan Traverse on Left “Exotic Terrane” Mount Shuksan Pillow Basalts exposed on Olympic Coast “Rotten Rock” of the Olympics Mount Stuart – Cascadian Couloir on right “Batholith” Granite Blocks on Stuart Summit Serpentinite Yellowstone Hotspot Columbia River Basalt – Moses Coulee Umatilla Rock from Dry Falls Dry Falls Potholes Coulee- Channeled Scablands
