Re: [asa] Grand Canyon and the flood

There are a couple of recent papers with Carol Hill, a Christian
geologist, as co-author, on the origins and timing of the Grand
Canyon: in Science (Age and Evolution of the Grand Canyon Revealed by
U-Pb Dating of Water Table–Type Speleothems, Victor Polyak, Carol
Hill, Yemane Asmerom, 319:1377-1380) and Geomorphology (A Karst
Connection model for Grand Canyon, Arizona, USA. C.A. Hill, N. Eberz,
R.H. Buecher, 95:316–334.).

If you go further upstream from the canyon, you do eventually find the
river at higher elevation. Both those papers and another recent one
in GSA Today suggest a role for karst (roughly=cave related for the
non-geologist). In other words, cave in of a cave helped direct what
is now the lower Colorado River rapidly lower. Draining of a
previously existing lake is part of the model developed in the
Geomorphology article, but the idea that one can connect that to a
global flood via honest geology is incorrect.

-- 
Dr. David Campbell
425 Scientific Collections
University of Alabama
"I think of my happy condition, surrounded by acres of clams"
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