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[bob ford <bobford79 AT yahoo.com>]

Bev; how long did it take for the Colorado to carve the Grand Canyon?  I've 
been there a number of times and maybe my memory is wrong, but I thought the 
standard theory was that it took hundreds of thousands if not millions of 
years....bobford


--- On Thu, 6/26/08, EarthNSky <erthnsky AT bellsouth.net> wrote:

> From: EarthNSky <erthnsky AT bellsouth.net>
> Subject: Re: [Homestead] Very fast climate change
> To: "Don Bowen" <don.bowen AT earthlink.net>, homestead AT lists.ibiblio.org
> Date: Thursday, June 26, 2008, 5:19 PM
> Exactly, Don.  The Grand Canyon, the Scablands, and about a
> bazillion 
> other landscapes were carved quickly.  I recall, when I was
> traveling 
> from Yakima to Spokane, feeling kind of awestruck,
> imagining being 
> engulfed in a massive wall of water-lake Missoula washing
> away 
> everything for hundreds of miles...
> 
> Don Bowen wrote:
> > I've always believed/known that climate change
> could be quick.  You and
> > I grew up in an era where it was taught that all
> processes are slow and
> > gradual, but we all know there must be balance.  The
> Grand Canyon is a
> > prime example...been there for millions of years, but
> a lot of erosion
> > happened catastrophically in floods...
> > ++++++++++++++++++++++++++++++++++++++++++++++
> > 
> > This was an issue when describing the Channeled
> Scablands in Washington.  By 
> > the 70s many geologists were saying the erosion
> happened very fast, maybe in 
> > a few days.  But many geologists stuck with the very
> long ties they were 
> > used to.  It was not until further research convinced
> many.
> > 
> > Don Bowen      KI6DIU
> >
> http://www.braingarage.com/Dons/Travels/journal/Journal.html
> 
> > 
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> 
> -- 
> BevanRon of EarthNSky Farm   NW Georgia USDA Zone 7
> 34.498N       85.076W    Bev is Earth, Ron is Sky                           
>           
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