Some of the best examples of exhumed river channels occur in the Ruby Ranch Member of the Cretaceous Cedar Mountain Formation southwest of Green River, Utah. Within the Cedar Mountain Formation in this part of Utah, fluvial sandstones filling paleochannels within it are cemented by calcium carbonate.
Notable examples of buried river channels can be found in the Ruby Ranch Member of the Cretaceous Cedar Mountain Formation southwest of Green River, Utah. In this region, sedimentary rocks within the formation contain sandstones that were once part of ancient channels and are now bound together by calcium carbonate.