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| | National Park Service: A Survey of the Recreational Resources of the Colorado River Basin (Chapter 2) |
 | | They are the Green River Basin, the Uinta Mountain Region, the Colorado Plateau (north and south portions), the eastern and western border lands, the Arizona mountain region, the Arizona volcanic areas, and the basin and range province. |
 | | Also suggestive of the Uinta structures is the remarkable Axial Basin a valley formed by stripping away the crest of an anticline which crosses the Yampa River and farther southeast merges with folds of the White River Plateau. |
 | | From Juniper Mountain to Steamboat Springs, Colo., except near the mouth of Elkhead Creek, where Tertiary rocks are exposed, the Yampa and its southern tributary flow on Cretaceous rocks, developing broad valleys and rounded hills in soft shales, and rugged landscapes of ridges, mesas, and "pagodas" in the most resistant sandstone. |
| www.cr.nps.gov /history/online_books/colorado/chap2.htm (3653 words) |
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