Usage:
Alamo Bluff lignite bed (informal) of Bear Den Member of Golden Valley Formation (ND-local)
Informal. The rank or lithologic term should not be capitalized.
Geologic age:
early Tertiary (late Paleocene)
Type section, locality, area and/or origin of name:
Named from exposure in a small escarpment near the ruins of an adobe house, facetiously called " the Alamo" by the Knife River party, in northeast corner of sec. 28, T. 143 N., R. 90 W., [approx. Lat. 47 deg. 10 min. 34.6 sec. N., Long. 102 deg. 05 min. 28.5 sec. W., Schaffner Creek NE 7.5-min quadrangle, Mercer Co., ND] (Benson, 1953).
AAPG geologic province:
Williston 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 ([ ]).