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- Usage in publication:
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- Esquatzel Member*
- Modifications:
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- Original reference
- Dominant lithology:
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- Basalt
- AAPG geologic province:
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- Eastern Columbia basin
Summary:
Pg. G45-G46. Esquatzel Member of Saddle Mountains Basalt of Columbia River Basalt Group. A single plagioclase- and clinopyroxene-phyric basalt flow; has normal magnetic polarity. Thickness <10 to 50 m. Unconformably overlies Priests Rapids Member of Wanapum Basalt; underlies Pomona Member of Saddle Mountains Basalt. Source not found. Age is middle Miocene.
Type locality: 1 km north of Mesa, on hillslope on north side of Esquatzel Coulee, from 223 to 241 m elevation, in NW/4 NW/4 sec. 25, T. 13 N., R. 30 E., Mesa quadrangle, Franklin Co., southeastern WA.
Reference locality: on south side of the Coulee, in SW/4 NW/4 sec. 25, T. 13 N., R. 30 E., Mesa quadrangle, Franklin Co., southeastern WA.
Source: US geologic names lexicon (USGS Bull. 1564, p. 56); GNU records (USGS DDS-6; Denver GNULEX).
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 ([ ]).