Geologic Map of the Boulder Area
Excerpted from "Boulder, A Sight to Behold: Guidebook" (1976) by Donald D. Runnells,
modified by Sheila Murphy.
Graphics adapted from Runnells by Erica J. Keefe.

Simplified geologic map of the Boulder Region. Patterns refer to different ages of rocks.

Additional Geology Information

For more information about geology and mining in the Boulder area, see the BASIN bibliography.

Return to the BASIN Watershed Theme

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Last Page Update - Monday April 23, 2007