Usage:
Whitewater Arroyo Tongue of Mancos Shale (NM*)
Whitewater Arroyo Shale Member of Dakota Sandstone (NM)
Geologic age:
early Late Cretaceous (Cenomanian)*
Type section, locality, area and/or origin of name:
Type section: across cuesta on north side of Whitewater Arroyo, in NE/4 sec. 17, T. 12 N., R. 19 W., McKinley Co., NM. Named from Whitewater Arroyo (Owen, 1966).
AAPG geologic province:
San Juan basin*
Orogrande basin*
Basin-and-Range province*
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 ([ ]).