Talk:Geology of the Zion and Kolob canyons area

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Featured article Geology of the Zion and Kolob canyons area is a featured article; it (or a previous version of it) has been identified as one of the best articles produced by the Wikipedia community. Even so, if you can update or improve it, please do so.
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older comments[edit]

Featured, with nary a conversation topic on its talk page... remarkable. This has to be one of the faster-track features in a while :-)

Most of the FAs I've written almost all by myself are like that. --mav

Both "Zion" and "Kolob" derive from Latter-day Saint beliefs. Because there is apparently no article on the canyons themselves, is it appropriate to note the etymology here? Cool Hand Luke 17:10, 6 Dec 2004 (UTC)

I think that would be more appropriate for the main Zion National Park article (which does do that, in fact). --mav 12:12, 13 Dec 2004 (UTC)

a few stratigraphic edits...[edit]

edited for time-rock unit problems (rocks/formations = Upper, Lower; time = Early, Late) and other minor geologic time and stratigraphic nomenclature errors...also a few paleoenvironmental changes for the Triassic units based on my own work -- Tim Demko

Cool - thanks! --mav 23:32, 12 Dec 2004 (UTC)

Tallest sandstone cliffs in the world?[edit]

It is stated here that "The monoliths in the sides of Zion Canyon are believed to have the tallest sandstone cliffs in the world.", the sandstone cliffs found in the Guiana Highlands, specially in Venezuela, are much higher, with the main wall of Angell Falls raising above 3,000 feet. I have edited the above sentence accordingly.

Dycotiles, 30th Nov 2005

Kaibab Limestone[edit]

This article indicates the age of the Kaibab Limestone is 240 million years old, then in the next section 260 million years old. The article on Grand Canyon says 230 million. Anyone care to clarify? Zencowboy27 (talk) 20:23, 14 January 2012 (UTC)

The ages of formations are a common area of dispute among geologists and different contemporaneous sources use somewhat different figures. Trouble comes when sources penned in widely-separated decades are used in the same article since new studies refine the figures over time. I removed the first mention of the age b/c it is from an older primary source and redundant anyway. As for the Grand Canyon; that is is a different area and thus has a different age profile (the Kaibab Sea grew and shrank over a period of millions of years covering a large area). I'll take a look at my more current books on the subject to make sure both articles are up-to-date. --mav (reviews needed) 01:59, 16 January 2012 (UTC)

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