Usage:
Bursum Formation of Madera Group (NM)
Geologic age:
Late Pennsylvanian (late Gzhelian; late Virgilian)*
Type section, locality, area and/or origin of name:
Type section: exposures about 30 mi south of geol. map bdry., just west of Bursum triangulation point, in SE/4 sec. 1, T. 6 S., R. 4 E., [approx. Lat. 33 deg. 48 min. 54 sec. N., Long. 106 deg. 28 min. 12 sec. W., Wrye Peak SW 7.5-min quadrangle, Jornado del Muerto area], Socorro Co., central NM. Mapped in areas along Socorro-Torrance Co. line and on flank of Los Pinos Mountains (Wilpolt and others, 1946).
AAPG geologic province:
Estancia basin*
Orogrande basin*
San Juan 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 ([ ]).