Colorado Geology Through Time

Colorado Geology Through Time

300 Million Years Ago Ancestral Rockies by Jan VriesenIn the Pennsylvanian period the Ancestral Rockies, Frontrangia and Uncompahgria, started to form. Rivers carried the sediments, consisting mostly of feldspar-rich gravels and sand that will be the source of red...
Kremmling Ammonite Site

Kremmling Ammonite Site

Kremmling Ammonites Site Ancient sea On top of a mountain Exploring the fossil site with the highest concentration of fossils and ammonites in particular in the world. “Ocean on Top of a Mountain” Kremmling Cretaceous Ammonite Locality in Colorado is called an...