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  • Usage in publication:
    • Lava Island Tuff*
  • Modifications:
    • Named
  • Dominant lithology:
    • Tuff
  • AAPG geologic province:
    • Cascades province
Publication:

Taylor, E.M., 1981, Central High Cascade roadside geology AND Road log for central High Cascade geology, Bend, Sisters, McKenzie Pass, and Santiam Pass, Oregon: U.S. Geological Survey Circular, 838, p. 55-83.


Summary:

Lava Island Tuff occurs in scattered outcrops and excavations between Awbrey and Overturf Buttes eastward to Deschutes River, central OR. Consists of cream to buff, rhyodacitic, completely devitrified tuff. Overlies Tumalo Tuff (new). Underlies Shevlin Park Tuff (new). [Name Lava Island Tuff first used by Taylor (1980) in GSA Abstract where brief lithologic description and age can be found.] Is Pleistocene age.

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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