The links below are field trip guides that may be enjoyed from your armchair or can be taken with you in the field!
The Geology Along the Trails West of NCAR by Emmett Evanoff and Sue E. Hirschfeld
Boulder Geologic Section by Emmett Evanoff
Geology of Marshall Mesa Open Space Boulder Colorado by Sue E. Hirschfeld
Field Guide to the Geology Along the Old Kiln Trail by Sue E. Hirschfeld