Usage:
Romeroville Sandstone of Dakota Group (CO*,NM*,OK*)
Geologic age:
late Early Cretaceous (Albian)*
Type section, locality, area and/or origin of name:
Type section: east-facing U.S. Interstate Highway I-25 roadcut (UTM 478,550 E.; 3,931,200 N.), at Romeroville Gap, 8 km south of Las Vegas, San Miguel Co., NM. Named from Romeroville, San Miguel Co., NM (Kues and Lucas, 1987; Lucas, 1990).
Reference section: Montezuma Gap, between Montezuma and Los Vigiles (UTM 475,400 E.; 3,945,150 N.), Colfax Co., NM (Lucas, 1990).
Reference section (subsurface): depth-interval 5,146 to 5,158 ft, electric log from W.J. Gourley No. 2 Vermejo well, in sec. 16, T. 30 N., R. 19 E., Colfax Co., NM (Lucas, 1990).
AAPG geologic province:
Palo Duro basin
Sierra Grande uplift
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 ([ ]).