Geology of National Parks, 3D and Photographic Tours
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| Click here to take an image tour of Lake Mead National Recreation Area (both 3D and standard photography). |
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Generalized stratigraphy modified after: Langenheim, R. L. and Schulmeister, M. K., 1987, Virgin River Gorge; Boundary between the Colorado Plateau and the Great Basin in northwestern Arizona: Geological Society of America Centennial Field Guide--Cordilleran Section, p. 43-46, and with Sue Beard (2004, personal communication). Stratigraphic unit information is modified from the USGS GeoLex (Lexicon of Geology): http://ngmdb.usgs.gov/Geolex/geolex_qs.html. Information about the Geologic Time Scale is available here.
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