The Washington state scablands were also created in a short time at the end of the last ice age when an enormous volume of water broke through an ice dam.
The enormous volumes of water are probably correct.
The 'ice dam', however, is purely imaginary.
“
The Washington state scablands were also created in a short time at the end
of the last ice age when an enormous volume of water broke through an ice dam.
“
In case you’ve not seen it...
PBS’s “NOVA” had a great episode on the creation of The Scablands.
It was very interesting (IIRC) how it was explained that supercooled
water, blasting through small cracks in an ice-dam can still create
enough friction/heat to cause the ice-dam to fail.
Also, the moment in which one academician realized he knew how the
scablands formed was great. Definitely a “eureka” moment.
Website for the episode:
http://www.pbs.org/wgbh/nova/megaflood/scablands.html