Usage:
Bowes Member of Piper Formation of Ellis Group (MT*,ND*)
Geologic age:
Middle Jurassic (Bathonian)*
Type section, locality, area and/or origin of name:
Type section (subsurface): depth-interval 3,360 to 3,417 ft, Northern Ordinance No. 1 Guertzgen well, in SW/4 NW/4 NE/4 sec. 2, T. 31 N., R. 19 E., Blaine Co., MT. Named from Bowes oil field (Nordquist, 1955).
AAPG geologic province:
Williston 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 ([ ]).