> Jeez.  It takes longer to see it than it took for it to form.
> During the "big flood" that is.

I don't know that anyone has suggested that the Grand Canyon formed
*quite* that quickly. However, for a geologic formation of even =

greater
size that is now believed to have formed literally in days (and that =

would
have been a most awesome site* to see) Gargoyle on eg Montana =

scablands
or look at eg

        http://en.wikipedia.org/wiki/Missoula_Floods

Quoting:
                The peak flow of the largest floods is estimated to be =

40 to 60 cubic
kilometers per hour (9.5 to 15 cubic miles per hour).[1][2] The
maximum flow speed approached 36 meters/second (80 miles per hour).[3]
Up to 1.9=D71019 joules of potential energy were released by each flood,
the equivalent of 4500 megatons of TNT.[4] The cumulative effect of
the floods was to excavate 210 km=B3 (50 mi=B3) of loess, sediment and
basalt from the channeled scablands of eastern Washington and to
transport it downstream.[1]


4500 megatons!
And that was only a little one :-)

        Russell



* an awesome sight as well. =


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