Hanson Creek Formation (ID*,NV*)
Combs Canyon Dolomite Member (NV*).
Middle Ordovician to Early Silurian*
"Typical exposures" occur on west side of Roberts Creek Mountain, Eureka Co., NV. Origin of name not stated by author, but probably named from Pete Hanson Creek (Merriam, 1940).
Great Basin province*
Idaho Mountains province*
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 ([ ]).