Video Guide To The Channeled Scabland Floods
Terms:
Harlan Bretz 1923
Ripple marks
Cataract
Basalt Flood Basalt
Scab lands
Coulee
Columnar Basalt
Catastrophism/ Uniformatarianism
Braided Stream Bed...100 miles across
Grand Coulee.....Grand Coulee Dam
Coulee Monocline
900 feet deep 6 miles wide, 20 miles long...grand coulee
400 feet 3 miles wide.....water 300 feet deep came over the top
Gravel Bar
Rich flood soils, recreation
Places/Concepts:
Columbia Gorge, Wallula Gap
Willamette Valley, the water was 400 feet at Portland, Oregon
15 to 12,000 years ago
Ripple marks 30 feet high 2 miles wide
Snake River
Columbia Plateau about 200,000 Square Miles
15,000 years ago
1/2 mile thick ice dam
Lake Missoula 2000 feet deep 5000 cu miles of water
10xs combined flows all rivers 65 miles an hour