"Tim" wrote in message
...
On Jun 23, 6:44 pm, bpuharic wrote:
http://www.msnbc.msn.com/id/37876895...ience-science/

Some of the most spectacular canyons on Earth and Mars were probably
formed in the geologic blink of an eye, suggests a new study that
found clues to their formation deep in the heart of Texas.

Lake Canyon Gorge, a 23-feet- (7-meter-) deep canyon in Comal County,
Texas, was carved in just three days by a flood in 2002. The flood
scoured a swath of greenery, leaving sand-colored bedrock rubble in
its wake.

---------------

lest creationists get their knickers bunched up, the article goes on
to say:

A single catastrophic flood capable of cutting into bedrock is
extremely rare

The Grand Canyon was formed as the Colorado River slowly wore down the
bedrock. That probably took millions of years though, said geologist
and study co-author Michael Lamb of Caltech in Pasadena, Calif.

But then again, Bob. Look at that giant gorge formed by Mt. St. Helens
if I remember correctly it's callthe the "little grand canyon" and it
was formed when, abut 30 years ago? I'm also familiar with another
less-popular theory that the GC was formed by a large catastrophy
(Like a great flood) and or a glacier (ice age) cut it in a much
shorter time than the river theory.

But I don't know if the Grand Canyon was formed in 'days' or a few
millinia, all I know is that it's there and its beautiful!

Parts of the Snake river canyon were formed over a couple months a few
thousand years ago. Supposedly a large inland sea, finally broke though and
emptied in to the sea.