Usage:
Ochoa Point Member of Dox Formation of Unkar Group of Grand Canyon Supergroup (AZ)
Geologic age:
Mesoproterozoic
Type section, locality, area and/or origin of name:
Type section: in an unnamed stream, either on the northwest[?] or the southwest[?] side of Ochoa Point, a promontory west of Basalt Canyon, northwest side of the Colorado River, eastern Grand Canyon, Vishnu Temple 15-min quadrangle, Coconino Co., AZ. Named from Ochoa Point (Stevenson and Beus, 1982).
AAPG geologic province:
Southern Rocky Mountain region
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 ([ ]).