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Bretz's view, which was seen as arguing for a catastrophic explanation of the geology, ran against the prevailing view of uniformitarianism, and Bretz's views were initially disregarded. C, invited the young Bretz to present his previously published research at a January 12, 1927 meeting where several other geologists presented competing theories. Bretz defended his theories, and this kicked off an acrimonious 40-year debate over the origin of the Scablands.Both Pardee and Bretz continued their research over the next 30 years, collecting and analyzing evidence that led them to identify Lake Missoula as the source of the Spokane Flood and creator of the Channeled Scablands.Over a period of time, the friction from water flowing through these cracks generated enough heat to melt the ice walls and enlarge the cracks.
Lake-bottom sediments deposited by the floods have contributed to the agricultural richness of the Willamette and Columbia Valleys.
The Missoula Floods (also known as the Spokane Floods or the Bretz Floods) refer to the cataclysmic floods that swept periodically across eastern Washington and down the Columbia River Gorge at the end of the last ice age.
The glacial flood events have been researched since the 1920s.
The peak flow of the floods is estimated to be 40 to 60 cubic kilometers per hour (9.5 to 15 cubic miles per hour).
Waitt's proposal was based mainly on analysis from glacial lake bottom deposits in Ninemile Creek and the flood deposits in Burlingame Canyon.