- Usage in publication:
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- Timber Lake Bed
- Modifications:
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- Named
- AAPG geologic province:
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- Great Basin province
Summary:
Unit is named the Timber Lake Bed of the Pyramid Lake Member (new) of the Mount Mazama Formation. Is exposed in the Lake Lahontan area, NV. Is the most phenocryst-rich of the nonbasaltic tephra and contains less potassium than any other bed in the Mount Mazama. Interfingers with the lower member of the Sehoo Formation. Overlies the Carson Sink Bed (new) of the Mono Basin Formation (new); underlies the Wono Bed (new) of the Pyramid Lake Member. Thickness is 1 cm. Age is Pleistocene, 35 to 11.5 ka. (B1565)
Source: GNU records (USGS DDS-6; Menlo 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 ([ ]).