Usage:
Moenkopi Formation (AZ*,CA*,CO*,NM*,NV*,UT*)
Subunits:
FORMATION STATUS (alphabetical): Ali Baba Member (CO*,UT*), Anton Chico Member (NM), Black Dragon Member (UT), Holbrook Sandstone Member (AZ*), Hoskinnini Member (AZ*,CO*,UT*) or Hoskinnini Tongue (AZ*,CO*,UT*), Moody Canyon Member (UT), Moqui Member (AZ*), Pariott Member (CO*,UT*), Rock Canyon Conglomerate Member (AZ*,NV*,UT*), Sewemup Member (CO*,UT*), Shnabkaib Member (AZ*,NV*,UT*), Sinbad Limestone Member (UT*), Tenderfoot Member (CO*,UT*), Timpoweap Member (AZ,NV,UT*), Torrey Member (UT), Virgin Limestone Member (AZ*,NV*,UT*), Winslow Member (AZ), Wupatki Member (AZ*).
Geologic age:
Early Triassic*; locally Middle Triassic*
Type section, locality, area and/or origin of name:
Named from Moenkopi Wash, Grand Canyon, [Coconino Co.], northern AZ (US geologic names lexicons, USGS Bull. 896, 1200).
AAPG geologic province:
Black Mesa basin*
Great Basin province*
Green River basin*
Las Vegas-Raton basin
Orogrande basin
Palo Duro basin
Paradox basin*
Piceance basin*
Plateau sedimentary province*
San Juan basin*
South Western Overthrust*
Uinta 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 ([ ]).