Earth's last major ice age locked up gargantuan amounts of water in vast glaciers. Once they melted, it was a spectacle to behold as tremendous floods gouged channels into the face of the planet.
The remnants of one of the largest of these ancient deluges are still visible in eastern Washington, in an area now known as the Channeled Scablands. For a long time, geologists have been struggling to understand the dynamic properties of these floods, until a recent key insight was made.
– deflections in the crust as heavy chunks of ice form and melt – would affect the routing flow and erosion in two prominent Scabland tracks.
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