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National Geologic Map Database

Geologic Unit: Chilhowee

Usage:

Chilhowee Group (AL*,GA*,MD*,NC*,NJ*,PA*,TN*,VA*,WV*)


Subunits:

(alphabetical): Antietam Formation (MD*,PA*,VA*,WV*) or Antietam Quartzite (MD*,PA*,VA*,WV*) or Antietam Sandstone (MD*,PA*,VA*), Cochran Formation (AL*,GA*,NC*,TN*) or Cochran Conglomerate (NC,TN), Crawfish Creek Formation (GA*), Erwin Formation (NC*,TN*,VA*) or Erwin Quartzite (NC*,TN*,VA*), Hampton Formation (NC*,TN*,VA*) or Hampton Shale (NC*,TN*,VA*), Harpers Formation (MD*,PA*,VA*,WV*) or Harpers Phyllite (MD*,PA*)or Harpers Shale (VA*,WV*), Helenmode Formation (NC*,TN*), Hesse Quartzite (NC*,TN*) or Hesse Sandstone (TN), Loudoun Formation (MD*,PA*,VA*,WV*), Murray Shale (NC*,TN*) or Murray Slate (NC,TN), Nebo Quartzite (NC*,TN*) or Nebo Sandstone (TN*), Nichols Formation (AL*,GA*) or Nichols Shale (AL,GA,NC*,TN*), Pinelog Formation (GA*), Unicoi Formation (NC*,TN*,VA*), Weisner Formation (AL*,GA*), Weverton Formation (MD*,PA*,VA*,WV*) or Weverton Quartzite (MD*,PA*,VA*,WV*), Wilson Ridge Formation (AL*,GA*).


Geologic age:

Late Proterozoic to Early Cambrian*


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

Composes Chilhowee Mountain, Sevier and Blount Cos., eastern TN (Safford, 1856).


AAPG geologic province:

Appalachian basin (Eastern Overthrust area)*
Piedmont-Blue Ridge 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 ([ ]).