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National Geologic Map Database

Geologic Unit: Bryson

Usage:

No current usage.
(Rocks of †Bryson Formation of Breathitt Group (KY*,TN*) reallocated to Cross Mountain Formation in TN, and to Breathitt Formation [or /Four Corners Formation of Breathitt Group] in KY. See Breathitt, Cross Mountain, and Four Corners.)

[Four Corners Formation conflicts with nomenclature guidelines (NACSN, 1983, 2005).]


Geologic age:

Middle Pennsylvanian (early Moscovian; Westphalian B; middle Atokan)


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

Named from Bryson Peak, Claiborne Co., northeastern TN (US geologic names lexicons, USGS Bull. 896, 1200).


AAPG geologic province:

Appalachian basin


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 ([ ]).