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| Generalized stratigraphy after: Anderson, P. P., Chidsey, T. C., Sprinkel,
D. A., and Willis, G. C., 2000, Geology of Glen Canyon Nation Recreation
Area: In Geology of Utah's Parks and Monuments, Sprinkel, D. A.,
Chidsey, T. C., and Anderson, P. B., editors, Utah Geological Association Publication
28., p. 301-335. Please note: The thick nesses of stratigraphic units are highly variable across the large region encompassed by Glen Canyon National Recreation Area. The scale above on this composite section does not reflect this variability. For more detailed thickness of unit descriptions, see Anderson and others (2000), p. 312-313. |
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Click here
to see a collection of historic images of Glen Canyon taken by the Powell
Expedition of 1872. Website images include both standard photograph and
3D views (as anaglyphs - requiring red-and-cyan 3D viewing glasses). This view shows cliffs of Navajo Sandstone along the Colorado about midway through Glen Canyon (before the valley was flooded by Lake Powell). To learn more about Glen Canyon National Recreation Area check out the National Park Service Website at: http://www.nps.gov/glca/. |
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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 at: https://gotbooks.miracosta.edu/gonp/coloradoplateau/timescale.htm. |