English Chinle Formation Cited by user Kent G. Budge on 16 Nov 2021 The Chinle Formation is an Upper Triassic continental geological formation of fluvial, lacustrine, and palustrine to eolian deposits spread across the U.S.
English Glen Canyon Group Cited by user Kent G. Budge on 28 Oct 2021 The Glen Canyon Group is a geologic group of formations that is spread across the U.S.