No current usage.
(Rocks of †Rockland Valley Basalt (ID) reallocated to Massacre Volcanics. See Massacre.)
middle(?) Pliocene
Exposures on north side of Rockland Valley, Power Co., ID. Origin of name not stated by author, but probably named from Rockland Valley (Stearns, 1936, Table 1).
Snake River 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 ([ ]).