Collection: Colorado

Home to the Geological Society of America (GSA), the Centennial State's landscapes tell a story of mountain building, erosion, and ice-age sculpting. Explore how uplift and ancient seas contributed to the Rockies, high plains, and iconic canyons. From Dinosaur National Monument to the Raton basin, from Pawnee Buttes National Grassland to the dramatic canyons, mesas, and alcoves of Mesa Verde National Park, there is something for every geologist in Colorado.