Usage:
Amherstburg Formation of Detroit River Group (MI*,OH*)
Subunits:
Sylvania Sandstone Member (base) (MI*), Filer Sandstone Lentil (MI*), Meldrum Member (MI).
Geologic age:
Middle Devonian*
Type section, locality, area and/or origin of name: (See Canadian Lexicon)
Named from Amherstburg, western Ontario, Canada, where it forms bottom of eastern channel of Detroit River (Sherzer and Grabau, 1909).
AAPG geologic province:
Michigan 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 ([ ]).