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National Geologic Map Database

Geologic Unit: Amherstburg

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 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 ([ ]).