Usage:
SCOLITHUS quartzite (informal) in Deadwood Formation (SD,WY)
SCOLITHUS sandstone (informal) in Deadwood Formation (SD,WY)
Informal. The rank or lithologic term should not be capitalized.
Geologic age:
Early Ordovician
Type section, locality, area and/or origin of name:
An informal term used to identify a "worm-eaten" quartzite 5 to 12 ft thick near top of Cambrian section in northern Black Hills, SD (Jaggar, 1901).
AAPG geologic province:
Powder River basin
Williston basin
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 ([ ]).