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National Geologic Map Database

Geologic Unit: Ross

Usage:

/Ross Formation (TN*)
/Ross Formation of Linden Group (MS,TN)

[Name preempted by Ross Limestone of Foerste (1903) in same area.]


Subunits:

(alphabetical) --all in TN: Bear Branch Limestone Member, Birdsong Shale Member, /Decaturville Chert Zone, /Rockhouse Limestone Member, Rockhouse Shale Member or Rockhouse Member, /Ross Limestone Member.


Geologic age:

Late Silurian to Early Devonian*


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

Notable exposures in western TN (Wilson, 1949).


AAPG geologic province:

Cincinnati arch*


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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).