Usage:
No current usage.
(†Rama Formation (AZ) is same as Cardenas Lava. See Cardenas.)
Geologic age:
Precambrian
Type section, locality, area and/or origin of name:
[Origin of name not stated by author (Maxson, 1961). Probably named from Rama Shrine, Cape Royal 7.5-min quadrangle, eastern Grand Canyon, Grand Canyon National Park, Coconino Co., northern AZ.]
[Notable exposures in Granite Gorge of Colorado River and Bright Angel Canyon, Bright Angel 15-min quadrangle, eastern Grand Canyon, Grand Canyon National Park, Coconino Co., northern AZ.]
AAPG geologic province:
Plateau sedimentary province
Southern Rocky Mountain region
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 ([ ]).