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Colorado
River |
* The following pages contain imagery from the Summer
2004 Colorado River and Trail Expedition's (CRATE)
Grand Canyon National Park 9-day natural history expedition down the Colorado
River. |
* If anyone has field trip imagery that they'd like
to post here, email Bob
Leighty. |
* Images
and videos are by author noted in the caption. All imagery is copyrighted
and cannot be used for any commercial purposes without permission. |
* Some text (usually in bold) will be hyperlinked for
further clarification of various terms and concepts. |
* Numerical dates for geologic time are mostly taken
from the International Commission
on Stratigraphy. |
* The rating of river rapids are on the 1-10 scale for western big-river waters. River discharge was a fairly steady 8,000 cfs for most of the trip, thus ratings for low river levels (3,000 to 9,000 cfs) were taken from Stevens (1983). |
* A number of resources were used in the following pages,
including: |
| Geologic Map of the Eastern Part of the Grand Canyon National Park, Arizona (Billingsley and others, 1996) |
| Geologic Log of the Colorado River from Lees Ferry to Temple Bar, Lake Mead, Arizona (Billingsley and Elston, 198?) |
Guidebook to the Colorado River, Part 2: Phantom Ranch in Grand Canyon National Park to Lake Mead, Arizona-Nevada (Hamblin and Rigby, 1982) |
Colorado River Briefs for a Trip through the Grand Canyon (Lindemann, 2003) |
| Guide to the Colorado River in the Grand Canyon: Lees Ferry to South Cove (Martin and Whitis, 2004) |
| Colorado River Guidebook: Lees Ferry to Phanton Ranch (Pewe, 1974) |
| River Runners' Guide to the Canyons of the Green and Colorado Rivers (Simmons and Gaskill, 1969) |
| The Colorado River in Grand Canyon: A Guide (Stevens, 1983) |