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Geologic Unit: Whalehead
Map showing publication footprint
  • Usage in publication:
    • Whalehead Formation
  • Modifications:
    • Named
  • Dominant lithology:
    • Graywacke
    • Mudstone
    • Conglomerate
  • AAPG geologic province:
    • Klamath Mountains province
Publication:

Widmier, J.M., 1963, Mesozoic stratigraphy of the west-central Klamath province: a study of eugeosynclinal sedimentation: Dissertation Abstracts, v. 23, no. 11, p. 4320-4321.


Summary:

Consists of graywacke and mudstone interstratified with coarse conglomerate. Is in fault contact with Chetco Formation (new). Age is middle Portlandian on basis of lithologic similarity and apparent regional continuity with rocks to north containing Portlandian clam BUCHIA PIOCHII.
Type locality not stated. Report discusses west-central Klamath province in southwestern OR and northwestern CA. Whalehead Creek is in Curry Co., OR.

Source: GNU records (USGS DDS-6; Menlo GNULEX); US geologic names lexicon (USGS Bull. 1350, p. 819).


Map showing publication footprint
  • Usage in publication:
    • Whalehead Formation
  • Modifications:
    • Not used
  • AAPG geologic province:
    • Klamath Mountains province
Publication:

Koch, J.G., 1966, Late Mesozoic stratigraphy and tectonic history, Port Orford-Gold Beach area, southwestern Oregon coast: American Association of Petroleum Geologists Bulletin, v. 50, no. 1, p. 25-71. [Available online, with subscription, from AAPG archives: http://www.aapg.org/datasystems or http://search.datapages.com]


Summary:

Widmier [1963] named "Whalehead Formation for a belemnoid- and chert-bearing sedimentary section faulted against the Dothan, a few mi south of Crook Point" [Curry Co, OR]. "This name is considered less desirable than that of the correlative Otter Point Formation" [new]. p.57-58

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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