Usage:
Oread Limestone of Shawnee Group (KS*,MO*,NE*)
Oread Limestone (IA*)
Oread Formation (MO)
Oread Limestone of Vamoosa Group (OK*)
Subunits:
FORMATION STATUS (alphabetical): Heebner Shale Member (IA*,KS*,MO*,NE*) or Heebner Shale Bed (OK*), Heumader Shale Member (IA,KS*,MO*,NE*), Kereford Limestone Member (MO) or Kereford Member (IA,KS*,MO*,NE*), Leavenworth Limestone Member (MO) or Leavenworth Member (IA*,KS*,MO*,NE*), Plattsmouth Limestone Member (MO) or Plattsmouth Member (IA*,KS*,MO*,NE*), Snyderville Shale Member (IA*,KS*,MO*,NE*), Toronto Limestone Member (MO) or Toronto Member (IA,KS*), Weeping Water Member (NE).
Geologic age:
Late Pennsylvanian (Virgilian)*
Type section, locality, area and/or origin of name:
Named for fact it caps Mount Oread, at Lawrence, Douglas Co., KS [in T. 12 S., R. 19 E.]. Caps all hills in vicinity of Lawrence, KS (Haworth, 1894).
AAPG geologic province:
Forest City basin*
Nemaha anticline*
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 ([ ]).