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National Geologic Map Database

Geologic Unit: Welling

Usage:

Welling Formation of Viola Group (OK)


Geologic age:

Late Ordovician (Cincinnatian; Edenian to Maysvillian)


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

Type locality: in NE/4 NE/4 sec. 36, T. 16 N., R. 22 E., Cherokee Co., OK. Named from the town of Welling, near the type locality at Horseshoe Bend of the Illinois River, Cherokee Co., OK (Amsden, 1979).
Reference section (subsurface): in OGS 3 core, in SE/4 SE/4 NE/4 sec. 20, T. 13 N., R. 21 E., Sequoyah Co., OK (Amsden, 1979).


AAPG geologic province:

Arkoma basin
Chautauqua platform
South Oklahoma folded belt


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 ([ ]).