- Usage in publication:
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- Pelican Island Bed
- Modifications:
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- Named
- AAPG geologic province:
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- Great Basin province
Summary:
Unit is named the Pelican Island Bed (lowermost of five) of the Pyramid Lake Member (new) of the Mount Mazama Formation. Consists of very fine-grained, ashy parting and is more potassium-rich than the Timber Lake Bed (new), the next higher bed in the Pyramid Lake Member. Interfingers with the lower member of the Sehoo Formation. Overlies the Marble Bluff Bed (new) and underlies the Carson Sink Bed (new) of the Mono Basin Formation (new). Age is Pleistocene, 35-11.5 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 ([ ]).