Most of western Colorado lies within the Colorado Plateau. This high-desert formed millions of years ago when tectonic plates slowly pushed together, uplifting stacked layers of sand, silt and mud ...

Rocks gathered along the Colorado River contained evidence of a bustling community of animals in an ancient sea.

More information: Natalie M. Tanski et al, The Mystery of Baselevel Controls in the Incision History of the Central Colorado Plateau, AGU Advances (2025). DOI: 10.1029/2024AV001359 ...