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National Geologic Map Database

Geologic Unit: Detroit River

Usage:

Detroit River Group (MI*,OH*)
Detroit River Formation of Muscatatuck Group (IN)


Subunits:

GROUP STATUS: Amherstburg Formation (MI*,OH*), Anderdon Formation/Limestone (MI,OH), Lucas Formation (MI*,OH*), Sylvania Sandstone (MI,OH).
FORMATION STATUS: Cranberry Marsh Member (IN), Grover Ditch Member (IN), Milan Center Dolomite Member (IN).


Geologic age:

Middle Devonian*


Type section, locality, area and/or origin of name:

[Type area:] exposures along Detroit River, MI (Lane and others, 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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).