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Geologic Unit: Osgood
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  • Usage in publication:
    • Osgood Bed
  • Modifications:
    • Named
  • AAPG geologic province:
    • Sierra Nevada province
Publication:

Davis, J.O., 1978, Quaternary tephrochronology of the Lake Lahontan area, Nevada and California: Nevada Archaeological Survey Research Paper, no. 7, 137 p.


Summary:

Unit is named the Osgood Bed. Occurs at Osgood Swamp, CA. Overlies the Tsoyawata Bed (new) of the Mazama Member (new) of the Mount Mazama Formation. Age is Holocene, 6 to 2 ka, based on the age of peat underlying the tephra. (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 ([ ]).

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