Usage:
Falls River Basalt (ID*,WY*)
Geologic age:
Quaternary (Pleistocene)*
Type section, locality, area and/or origin of name:
Type locality: west rim of valley of Falls River, just below Cave Falls, in southwest corner of Yellowstone National Park, [approx. Lat. 44 deg. 08 min. 36 sec. N., Long. 110 deg. 59 min. 59 sec. W., Grassy Lake Reservoir 15-min quadrangle], Teton Co., northwestern WY. Named from Falls River (Christiansen and Blank, 1972).
AAPG geologic province:
Yellowstone 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 ([ ]).