- Usage in publication:
-
- Blue Lake Rhyolite Member*
- Modifications:
-
- Named
- Dominant lithology:
-
- Rhyolite
- AAPG geologic province:
-
- Great Basin province
Summary:
Named as a member of the Mount Belknap Volcanics for exposures on flanks of a valley adjacent to Blue Lake, sec 11, T28N, R5W, Piute Co., UT on the Wasatch uplift. Extends north and on the west into Beaver Co. in the Great Basin province. Is an ash flow tuff about 260 m thick. Is exposed locally along the west side of the Mount Belknap caldera. Is part of the intracaldera facies of the Mount Belknap. Is younger than the lower tuff member and older than the middle tuff member. Assigned to the Miocene.
Source: 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 ([ ]).