Named as a formation in Chilhowee group. In Asheville folio, Keith (1904) used names derived from type locality of Lower Cambrian formations down to and including Cochran conglomerate. Formations below Cochran he called Hiwassee slate and Snowbird formation; he also applied those names to formations of Ocoee series, the type localities of which are in areas of that series and not in Lower Cambrian rocks. Authors therefore do not use those names. For Hiwassee, they here substitute Sandsuck shale; for rocks below Sandsuck, they here name Vann quartzite. Beds that lie beneath Sandsuck shale in Hot Springs area are not present, or were not recognized in type section in Chilhowee Mountain. Consists of thick-bedded arkosic quartzite, thin shale, and conglomerate beds. Thickness is 1200 to 1400 ft. Age is Early Cambrian.
Source: GNU records (USGS DDS-6; Reston GNULEX).
Vann quartzite shown in table 4 as late Precambrian in age.
Source: GNU records (USGS DDS-6; Reston GNULEX).
Rocks mapped by Stose and Stose (1947) as Vann quartzite are here assigned to Snowbird formation.
Source: GNU records (USGS DDS-6; Reston GNULEX).
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 ([ ]).