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Click here to learn more about Grand Canyon National Park (National Park Service website: http://www.nps.gov/grca).
Click here to see historic 3D photography taken by the John Wesley Powell Survey of 1871-72.
Click here to learn about the USGS mapping expedition of 1923 through the Grand Canyon.
Click here to learn more about sedimentary rock formations exposed in the Grand Canyon.
See Selected References about Grand Canyon National Park geology.
Geologic maps of the Grand Canyon include:
Billingsley, George H., 2000, Geologic Map of the Grand Canyon 30' by 60' Quadrangle, Coconino and Mohave Counties, Northwestern Arizona: U.S. Geological Survey Geologic Investigation Series I-2688, Available on-line at: http://pubs.usgs.gov/imap/i-2688/.
Billingsley, George H. and Wellmeyer, Jessica L., 2004, Geologic Map of the Mount Trumbull 30' x 60' Quadrangle, Mohave and Coconin Counties, Northwestern Arizona: U.S. Geological Survey Geologic Investigation Series I-2766, Available on-line at: http://pubs.usgs.gov/imap/i-2766/.
Geologic ages in this website follow recommended information by Mathis and Bowman (2005). |
