Island of Sky facies (informal) in Black Dragon Member of Moenkopi Formation (UT)
Informal. The rank or lithologic term should not be capitalized.
Early Triassic
Named from Island in the Sky Plateau, northwest Monument upwarp, San Juan Co., southeastern UT (Blakey, 1974).
Paradox basin
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).
Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).