Usage:
basalt of Martindale (informal) in Ice Harbor Member of Saddle Mountains Basalt of Columbia River Basalt Group (WA*)
basalt of Martindale (informal) in Ice Harbor Member of Saddle Mountains Basalt of /Yakima basalt subgroup [informal] of Columbia River Basalt Group (WA*)
Also called flows of Martindale (informal).
Informal. The rank or lithologic term should not be capitalized. [Yakima basalt subgroup considered informal and should not be capitalized. "Subgroup" not recognized as a formal stratigraphic rank term (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). Columbia River Basalt Group adopted by the ID, OR, and WA Geol. Surveys, and the USGS (rules suspended).]
Geologic age:
late Tertiary (late Miocene)*
Type section, locality, area and/or origin of name:
Named from Martindale, a RR siding on north side of Snake River, about 3.5 km downstream from type locality of Ice Harbor Member, Franklin Co., WA (Swanson and others, 1979).
Reference localities, all in WA: (1) highest cliffs along both sides of Walla Walla River about 3 km west of Reese, in sec. 21, T. 7 N., R. 32 E, Zangar Junction quadrangle; (2) quarry about 12 km west of Kennewick, in SW/4 NE/4 sec. 14, T. 8 N., R. 28 E., Badger Mountain quadrangle; and (3) exposures 5.5 km southwest of Eltopia along east side of Highway 395, in NW/4 sec. 27, T. 11 N., R. 30 E., Eltopia quadrangle (Swanson and others, 1979).
AAPG geologic province:
Eastern Columbia 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 ([ ]).