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National Geologic Map Database

Geologic Unit: Billman Creek

Usage:

Billman Creek Formation of Livingston Group (MT*)


Geologic age:

Late Cretaceous (Maastrichtian)*


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

Type section: near Billman Creek, in S/2 sec. 13, T. 2 S., R. 8 E., and in W/2 sec. 18, T. 2 S., R. 9 E., Park Co., south-central MT. Named from Billman Creek (Roberts, 1963; see also Roberts, 1972).


AAPG geologic province:

Central Montana uplift*
Montana folded belt*


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 ([ ]).