Usage:
Bow Island Sandstone Member of Mowry Shale (MT)
[?] Bow Island Sandstone (MT)
Geologic age:
late Early Cretaceous (Albian)
Type section, locality, area and/or origin of name: (See Canadian Lexicon)
First used in Bow Island gas field, Alberta, Canada.
AAPG geologic province:
Central Montana uplift
Sweetgrass arch
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 ([ ]).