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- Usage in publication:
-
- Elk River beds
- Modifications:
-
- Revised
- Age modified
- AAPG geologic province:
-
- Western Columbia basin
Summary:
Pg. 35, 42-43. Elk River beds of Cape Blanco region, as currently used, include deposits of late- to post-Pleistocene age and beds of middle Pliocene age which unconformably underly them. Name Elk River beds is restricted to terrace deposits in accordance with Diller's original definition. Name Port Orford formation is proposed for beds of middle Pliocene age; name Coquille formation is proposed for estuarine deposits that unconformably underlie Elk River beds (restricted) just north of mouth of Coquille River. Age is late Pleistocene.
Source: US geologic names lexicon (USGS Bull. 1200, p. 1238).
- Usage in publication:
-
- Elk River beds*
- Modifications:
-
- Revised
- Age modified
- AAPG geologic province:
-
- Western Columbia basin
Summary:
Type Elk River Beds (in southwestern Oregon) restricted to those beds in the type section below a wave-cut platform. Age is changed from late Pleistocene --to-- Pliocene or Pleistocene.
Source: Changes in stratigraphic nomenclature, 1970 (USGS Bull. 1354-A, p. A6-A7).
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 ([ ]).