- Usage in publication:
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- Museum Basalt 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. 8, 11-12. Museum Basalt Member of Yakima Basalt. Overlies Rocky Coulee Basalt Member (new); underlies Vantage Sandstone Member (new). Best known from holes drilled on Columbia Valley floor in a 4-mile segment south of Vantage. Core sections indicate flow is 90 +/-5 feet thick. [Age is Miocene.]
Type locality: Washington State Gingko Petrified Forest Museum, southwest of Vantage, Kittitas Co., central southern WA. Museum building is on stripped structural surface developed on basal 10-12 ft of the colonnade of Museum flow.
Source: US geologic names lexicon (USGS Bull. 1350, p. 516-517).
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 ([ ]).