Usage:
Hamlin Shale Member of Janesville Shale of Admire Group (KS*,NE*,OK*)
Subunits:
MEMBER STATUS (alphabetical) --all in KS*,NE*: Houchen Creek Limestone Bed, Oaks Shale Bed, Stine Shale Bed.
Geologic age:
Late Pennsylvanian (Virgilian)
Type section, locality, area and/or origin of name:
Type locality not designated. Origin of name not stated by author; Hamlin was included in section from Forest City, MO, to Dubois, NE (Condra, 1935; US geologic names lexicons, USGS Bull. 896, 1200).
AAPG geologic province:
Chautauqua platform*
Cherokee basin*
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 ([ ]).