- Usage in publication:
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- Wono Bed
- Modifications:
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- Named
- AAPG geologic province:
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- Great Basin province
Summary:
Unit is named the Wono Bed of the Pyramid Lake Member of the Mount Mazama Formation. Is exposed in the Lake Lahontan area where it occurs in many localities from Pyramid Lake to the Carson Desert. Consists of three or more graded beds of white tephra, at least 10 cm thick, and represents several airfall events. Characteristic of the Wono is the presence of long thin pipes among the glass shards. Is interbedded with the lower member of the Sehoo Formation. Overlies the Timber Lake Bed (new) and underlies the Leter Ranch Bed (new), both of the Pyramid Lake. 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 ([ ]).