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National Geologic Map Database

Geologic Unit: Bony Falls

Usage:

No current usage.
(†Bony Falls Member of Black River Formation (MI) or †Bony Falls Formation (MI) considered obsolete. Is same as Black River Formation. See Black River.)


Geologic age:

Late Ordovician


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

Type locality: at Bony Falls on Escanaba River, in sec. 1, T. 41 N., R. 24 W., Delta Co., northern MI (Hussey, 1952).


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 ([ ]).