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  • Usage in publication:
    • Cape Foulweather Basalt*
  • Modifications:
    • Named
  • Dominant lithology:
    • Basalt
  • AAPG geologic province:
    • Oregon-Washington Coast Ranges province
Publication:

Snavely, P.D., Jr., MacLeod, N.S., and Wagner, H.C., 1973, Miocene tholeiitic basalts of coastal Oregon and Washington and their relations to coeval basalts of the Columbia Plateau: Geological Society of America Bulletin, v. 84, no. 2, p. 387-424.


Summary:

Named for exposures at Cape Foulweather, 4 km south of Depoe Bay, OR. Type locality designated as exposures along a 7 km long strip from Otter Crest on Cape Foulweather 4 km south of Depoe Bay, north to Government Point, Cape Foulweather 15' quad, Lincoln Co., OR. Composed of gray, basalt flows, extrusive breccia, waterlaid basaltic fragmental debris, and dikes and sills. Thickness is minimum of 150 m. Unconformably overlies Astoria Formation or Depoe Bay Basalt (new). Underlies unnamed offshore sedimentary rocks. Age is middle Miocene.

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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