Geologic Structure Section of the Denver Basin Colorado.
A interesting geological map that spans from the town of Erie on the front range, south to the then very small town of parker. With a base map that shows the roads and towns as they were at the time, with printed color identifying 14 types of geologic strata, it has six geologic profiles that slice through the map to give a distinct illustration of the changing geology along the front range.
Condition is very good, crisp color. Image size 21.5 x 21.5 (inches).