RockTalk: Mapping Colorado Download Publication Details This edition of RockTalk provides insight into the life of a geologist. Digital PDF download. RT-07-04D From the Introduction: Hasn’t Colorado Already Been Mapped? This is a common response when Colorado Geological Survey (CGS) personnel tell someone that we have a geologic mapping program. The answer is yes. And, no. Yes, the state is completely mapped topographically at a detailed scale of 1:24,000. Yes, there is a geologic map of Colorado. No, the state has not been mapped geologically at a detailed scale. Colorado has nearly 1800 quadrangles, each covering 7.5 minutes of latitude and longitude, or about 56 square miles. However, only a fifth of the state’s quadrangles are mapped in detail. Citations Colorado Geological Survey. “RockTalk V07N4, Fall 2004 - Mapping Colorado.” RockTalk, Fall 2004. https://doi.org/10.58783/cgs.rt0704.ewpc1782. CGS Publications. https://coloradogeologicalsurvey.org/publications/rocktalk-mapping-colorado/.