Usage:
Cardenas Basalt of Unkar Group of Grand Canyon Supergroup (AZ*)
Cardenas Lava of Unkar Group of Grand Canyon Supergroup (AZ*)
Geologic age:
Mesoproterozoic*
Type section, locality, area and/or origin of name:
Not synopsized to date.
Named from Cardenas Butte at the base of which the full sequence is well exposed, in westward bend of Colorado River below mouth of Little Colorado River, Grand Canyon National Park
AAPG geologic 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 ([ ]).