Usage:
/Nemaha subgroup [informal] of Wabaunsee Group (KS)
["Subgroup" not recognized as a formal stratigraphic rank term (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). Nemaha subgroup considered informal and should not be capitalized.]
Subunits:
(alphabetical) --all in KS: Auburn Shale, Bern Limestone, Emporia Limestone, Willard Shale.
Geologic age:
Late Pennsylvanian (Virgilian)
Type section, locality, area and/or origin of name:
Best developed in Big Nemaha Valley, with exposures between Tecumseh and Humboldt and between Union and Nebraska City, north of Rulo, and at mouth of the Big Nemaha, [Cass, Johnson, Nemaha, Otoe, Pawnee, and Richardson Cos.], southeastern NE (Condra and Bengtson, 1915).
Type locality: Big Nemaha Valley between south of Falls City and southeast of Rulo, Richardson Co., southeastern NE.
AAPG geologic province:
Nemaha anticline
Forest City 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 ([ ]).