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The Goosenecks on the Yampa River in Dinosaur National Monument, Colorado, April ©2018 hopkins/neoscenes

Colorado Geology


Much of the CGS website is under heavy re-construction and will be for some time. The Publications area is working normally, but there is a lot of content from our original site that was in desperate need of updating. Please bear with us as we gather new information and rewrite hundreds of pages of material, gather and properly caption high-resolution images and otherwise bring you some very cool new and archival material never before seen! Stay in touch by subscribing to the >RockTalk< blog where we will announce new items periodically.


This section of the website will eventually be a full review of the salient features, structures, and principles that make up the geological picture of the state. Based on former State Geologist, Vince Matthews’ award-winning book, Messages in Stone, we will re-create the content that appeared in the vintage website and in the book, albeit with new high-resolution illustrations.