100 years ago, a rogue Washington geologist faced ridicule for his 'catastrophic' theory. He was right.

Key Points:

• In 1923, geologist J. Harlen Bretz proposed that the Channeled Scablands of Eastern Washington were formed rapidly by a cataclysmic flood, challenging the prevailing belief that geological formations develop over millennia.
• Bretz faced ridicule for over a decade as his theory contradicted the dominant uniformitarianism view, but his detailed fieldwork revealed unique topographic features indicative of massive flooding.
• The source of the flood was later identified by geologist Joseph Pardee as Glacial Lake Missoula in Montana, which released a massive volume of water when its ice dam broke, causing multiple catastrophic floods across several states.
• These floods, occurring near the end of the last Ice Age, dramatically reshaped the landscape in a matter of days, a concept initially dismissed but eventually accepted by the scientific community.
• Bretz was ultimately vindicated and honored late in life, receiving the Geological Society of America’s Penrose Medal in 1979 at age 97, marking a significant shift in geological understanding toward accepting catastrophic events.