Usage:
Hartville Formation (NE,WY*)
Subunits:
(alphabetical): Broom Creek Member (NE,WY), Cassa Member (NE,WY), Darwin Sandstone Member (WY*), Fairbank Member (WY), Hayden Member (NE,WY), Meek Member (NE,WY), Reclamation Member (NE,WY), Roundtop Member (NE,WY), Wendover Member (NE,WY).
Geologic age:
Pennsylvanian, Early*
Morrowan*
Pennsylvanian, Middle*
Atokan*
Desmoinesian*
Pennsylvanian, Late*
Missourian*
Virgilian*
Type section, locality, area and/or origin of name:
[Mapped over large area at and around Hartville, Hartville uplift, Hartville quadrangle (scale 1:125,000), Platte Co., southeastern WY (see Smith, 1903).]
AAPG geologic province:
Denver basin*
Powder River 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 ([ ]).