Digital database of the previously published geologic map of the greater Denver area, Front Range Urban Corridor, Colorado
This digital map shows the areal extent of surficial deposits and
rock stratigraphic units (formations) as compiled by Trimble and
Machette from 1973 to 1977 and published in 1979 under the Front
Range Urban Corridor Geology Program.  Trimble and Machette
compiled their geologic map from published geologic maps and …