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National Geologic Map Database

Geologic Unit: Gravel Point

Usage:

Gravel Point Formation (MI)
Gravel Point Formation of Traverse Group (MI)
Gravel Point Limestone (MI)


Subunits:

Gorbut Member.


Geologic age:

Middle Devonian


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

Named from exposures south of Gravel Point, 1.5 mi west of Charlevoix, Charlevoix Co., Traverse Bay region, central MI (Pohl, 1930).


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 ([ ]).