Geosphere; February 2008; v. 4; no. 1;
p. 183-206; DOI: 10.1130/GES00133.1
© Geological Society of America
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Figure 7. Map of the southern Uinkaret volcanic field showing the location of all reliable dates between 225 and 160 ka. Lava flows of this age are interpreted to have entered the canyon near river mile 187.5 (Whitmore Wash) and possibly at river mile 182. Cosmogenic dates on a flow north of Vulcan's Throne and on Vulcan's Footrest indicate volcanism along the Toroweap fault during this time period; however, it is unclear if these flows entered the canyon.
Copyright © 2008 by Geological Society of America
