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Megafloods 2 (Spokane
Flood (Megaripples (mesoscale transverse gravel…
Megafloods 2
Spokane
Flood
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Large 'dry' canyons
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large, steep walled canyons
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Megaripples
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comprise gravel, cobbles & boulders
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Bretz Proposal
3,000 sq miles of Colombia Plateau swept by glacial flood
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left bare, eroded rock-cut channel floors
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