Usage:
Marcella Formation (AR)
Subunits:
Wallace Creek Shale Member (AR).
Geologic age:
Late Mississippian (Chesterian)
Type section, locality, area and/or origin of name:
Type section: exposures on Wallace Creek, in NW/4 sec. 12, T. 13 N., R. 9 W., near Marcella, Stone Co., AR (Ogren, 1968).
AAPG geologic province:
Arkoma 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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).