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National Geologic Map Database

Geologic Unit: Hoodoo

Usage:

Hoodoo Quartzite (ID*)


Geologic age:

Mesoproterozoic*


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

Type locality: exposures along Hoodoo Creek, in northwestern part of Casto quadrangle, Casto region, Lemhi Co., southern central ID. Named from Hoodoo Creek (Ross, 1932, 1934).
Principal reference section (Ross' 1934 section, p. 16): near Yellowjacket mining district, along Yellowjacket and Shovel Creeks, in T. 19 N., R. 17 E. (unsurveyed), about 2 mi (3.2 km) northeast of the mine and mill, Lemhi Co., southern central ID (Ekren, 1988).


AAPG geologic province:

Northern Rocky Mountain region*


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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).