Usage:
Maple Ridge Porphyry (UT-recognized locally in Maple Ridge area, Washington Co.)
Geologic age:
Tertiary
Type section, locality, area and/or origin of name:
Not designated. Maple Ridge is in T. 38 S., R. 18 W., Washington Co., UT (Cook, 1960).
AAPG geologic province:
Great Basin 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 ([ ]).