Usage:
No current usage.
(†Westwater Formation (AZ*) replaced with West Water Formation. See West Water.)
Geologic age:
Late Cretaceous to Eocene, probably Paleocene to Eocene*
Type section, locality, area and/or origin of name:
Same as type section for Music Mountain Formation: UTM grid 12STQ562468; adj. parts of sec. 16 and 17, T. 26 N., R. 13 W., Lat. 35 deg. 38 min. 00 sec. N., Long. 113 deg. 41 min. 40 sec. W., Milkweed Canyon NW 7.5-min quadrangle, Mohave Co., AZ. Named from exposures at and near junction of Westwater Canyon, a major tributary of Milkweed Canyon, in sec. 17, T. 26 N., R. 13 W., Milkweed Canyon NW 7.5-min quadrangle, Hualapai Plateau, western Grand Canyon, Mohave Co., AZ (Young, 1966; in press).
AAPG geologic province:
Plateau sedimentary 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 ([ ]).