Usage:
Altamont Limestone of Marmaton Group (KS*,OK*)
Altamont Formation of Marmaton Group (IA*,MO*)
Altamont Limestone Member of Oologah Formation of Marmaton Group (OK*)
Altamont Formation of /Appanoose subgroup [informal] of Marmaton Group (MO)
["Subgroup" not recognized as a formal stratigraphic rank term (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). Appanoose subgroup considered informal and should not be capitalized.]
Subunits:
FORMATION STATUS (alphabetical) --all in IA*,KS*,MO*: Amoret Limestone Member, Lake Neosho Shale Member, Worland Limestone Member.
MEMBER STATUS --all in OK*: Amoret Limestone Bed, Worland Limestone Bed.
Geologic age:
Middle Pennsylvanian (Desmoinesian)*
Type section, locality, area and/or origin of name:
Named from exposures at Altamont, Labette Co., southeastern KS (Adams, 1896).
Type locality: near center of west line of sec. 5, T. 33 S., R. 19 E., about 3.5 mi west of Altamont, Labette Co., southeastern KS. No exposures in vicinity of Altamont show whole Altamont formation (Jewett, 1941).
AAPG geologic province:
Chautauqua platform*
Cherokee basin*
Forest City basin
Lincoln 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 ([ ]).