Talk:Grand Canyon Supergroup

External links reduction
I have removed an abundance of external links recently added per What Wikipedia is not:Indiscriminate collection of links. These may work as possible further references in the article, so I share them here. Regards, GenQuest  "Talk to Me" 02:47, 23 April 2014 (UTC)


 * Anonymous (2011a) Grand Canyon Supergroup, Stratigraphy of the Parks of the Colorado Plateau. U.S. Geological Survey, Reston, Virginia.
 * Anonymous (2011b) Sixtymile Formation, Stratigraphy of the Parks of the Colorado Plateau. U.S. Geological Survey, Reston, Virginia.
 * Anonymous (2011c) Chuar Group of Grand Canyon Supergroup, Stratigraphy of the Parks of the Colorado Plateau. U.S. Geological Survey, Reston, Virginia.
 * Anonymous (2011d) Nankoweap Formation, Stratigraphy of the Parks of the Colorado Plateau. U.S. Geological Survey, Reston, Virginia.
 * Anonymous (2011e) Unkar Group of Grand Canyon Supergroup, Stratigraphy of the Parks of the Colorado Plateau. U.S. Geological Survey, Reston, Virginia.
 * Anonymous (2011f) Vishnu Basement Rocks, Stratigraphy of the Parks of the Colorado Plateau. U.S. Geological Survey, Reston, Virginia.
 * Brandriss, M. (2004) Angular unconformity between Proterozoic and Cambrian rocks, Grand Canyon, Arizona.  GeoDIL, A Geoscience Digital Image Library, University of North Dakota, Grand Forks, North Dakota.
 * Bloch, J. D., J. M. Timmons, L. J. Crossey, G. E. Gehrels, and K. E. Karlstrom (2005) The Petrology of Mesoproterozoic Unkar Group Shales and Detrital Zircon Geochronology of Interbedded Sandstones, Grand Canyon: Grenvillian Influence on Sedimentation of Inboard Rodinia.  Search and Discovery Article #50010 American Association of Petroleum Geologist, Tulsa, Oklahoma.
 * Keller, B., (2012a) Overview of the Grand Canyon Supergroup, Grand Hikes, Bob's Rock Shop.
 * Mathis, A., and C. Bowman (2007) The Grand Age of Rocks: The Numeric Ages for Rocks Exposed within Grand Canyon, Grand Canyon National Park, Arizona, National Park Service, Grand Canyon National Park, Arizona.
 * Seeley, J.M. (1999) Delineation of Proterozoic Unkar Group / Chuar Group (Grand Canyon Supergroup) Sedimentary Basin Deposits in Northern Arizona Using Gravity and Magnetic Geophysical Techniques. Publications, John M. Seeley Consulting, Casper, Wyoming.
 * Timmons, M., K. Karlstrom, and C. Dehler (1999) Grand Canyon Supergroup Six Unconformities Make One Great Unconformity A Record of Supercontinent Assembly and Disassembly. Boatman's Quarterly Review. vol. 12, no. 1, pp. 29–32.
 * Wiley, B.H., S.L. Rauzi, A.D. Cook, H.E. Clifton, K. Lung-Chaun, and A.J. Moser (1998) Geologic Description, Sampling, Petroleum Potential, and Depositional Environment of the Chuar Group, Grand Canyon, Arizona. Arizona Geological Survey Open File Report, OFR-98-17, 2 map sheets, 92 pp.

External links modified
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 * Added archive https://web.archive.org/web/20121220094947/http://www.nature.nps.gov/geology/parks/grca/age/index.cfm to http://www2.nature.nps.gov/geology/parks/grca/age/index.cfm

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