Freethought & Rationalism Archive

Coragyps · 07-21-2002, 03:21 PM

<a href="http://www.newswise.com/articles/2002/7/GRNDCNYN.UAZ.html" target="_blank">This press release,</a> which doesn't seem to refer to a paper, is on some USGS/University of Arizona work that finds evidence that the Grand Canyon formed, in part, due to recent catastrophic flooding.

But not that recent, and several floods...

Quote:

More evidence of the age of the Inner Gorge comes from 600,000-year-old lava flows in western Grand Canyon that lie near current river level in the vicinity of both the Toroweap and Hurricane Faults. If both the 770,000 and 600,000 year dates are correct, the presence of these lava flows suggests that the river may have downcut quickly in geologic terms.

The follow-up to this one I'd really like to see, after AiG trumpets their great triumph of this new evidence of a young earth all around, is this:

Quote:

They applied a cosmogenic dating method developed by Cerling to date basalt flows and other landforms in the Grand Canyon. The technique measures how long a surface has been exposed to cosmic rays from space. Their application of this technique to lava flows in western Grand Canyon makes this region the best understood in terms of the ages of volcanic features in the Southwest.

(edut fer spelun)

[ July 21, 2002: Message edited by: Coragyps ]</p>

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