Usage:
Bluecastle Tongue of Castlegate Sandstone of Mesaverde Group (UT*)
Bluecastle Sandstone Member of Price River Formation of Mesaverde Group (UT*)
Bluecastle Sandstone Member of Neslen Formation of Mesaverde Group (UT*)
Geologic age:
Late Cretaceous (Campanian)*
Type section, locality, area and/or origin of name:
Named from exposures in Bluecastle Canyon, [Book Cliffs coal field, in T. 20 S., R. 15 and 16 E., Grand Co.], central eastern UT. Caps Bluecastle Butte (Fisher, 1936).
AAPG geologic province:
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 ([ ]).