Simplified geologic map showing the distribution of Tertiary and Quaternary basaltic volcanism. The volcanic deposits are primarily located north of the Colorado River and are delineated into 3 categories: Holocene volcanic rocks; Pleistocene volcanic rocks, and Tertiary volcanic rocks. Faults are also mapped.
Simplified geologic map showing the distribution of Tertiary and Quaternary basaltic volcanism.
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Map by Trista Thornberry-Ehrlich (Colorado State University) using GRI GIS data and information in
Billingsley (2000a), Billingsley and Wellmeyer (2003), and Billingsley et al. (2006) (Crow et al. 2015, figure
1).
Public domain:Full Granting Rights
Image
Grand Canyon National Park, Code: GRCA
Grand Canyon National Park, Arizona Latitude: 36.3291397094727, Longitude: -112.790603637695