U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Oread

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 usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).