What created the Scablands?
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Simply so, how did the flood that formed the Scablands happen?
Large potholes were formed by swirling vortexes of water called kolks scouring and plucking out the bedrock. The Scablands are littered with large boulders called glacial erratics that rafted on glaciers and were deposited by the glacial outburst flooding.
Beside above, what immense lake emptied in a catastrophic flood 15000 years ago when an ice dam failed creating the scablands? Glacial Lake Missoula
Correspondingly, where did the name Scablands come from?
Their origin was a complete mystery. The Channeled Scablands extend from the area around Spokane, west to the Columbia River near Vantage and southwest to the Snake River near Pasco. They are known as the "Channeled Scablands" because they are crisscrossed by long channels cut into the bedrock, called coulees.
When did Harlen Bretz proposes the Channeled Scablands Megaflood story?
The area was a desert, but Bretz's theories required cataclysmic water flows to form the landscape, for which Bretz coined the term Spokane Floods in a 1925 publication. Bretz published a paper in 1923, arguing that the channeled scablands in Eastern Washington were caused by massive flooding in the distant past.