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Geologic Units: Narrows
Map showing publication footprint
  • Usage in publication:
    • Narrows ash layer*
  • Modifications:
    • Named
  • Dominant lithology:
    • Volcanics
  • AAPG geologic province:
    • Snake River basin
Publication:

Powers, H.A., and Malde, H.E., 1961, Volcanic ash beds as stratigraphic markers in basin deposits near Hagerman and Glenns Ferry, Idaho; Article 70, IN Geological Survey Research 1961; short papers in the geologic and hydrologic sciences; Articles 1-146: U.S. Geological Survey Professional Paper, 424-B, p. B167-169.


Summary:

Pg. B167-B170. Narrows ash layer. Name informally applied to a volcanic ash layer that is useful as stratigraphic marker in basin deposits near Hagerman and Glenns Ferry. Age is early Pleistocene and late Pliocene.
Named for the Narrows, 5 mi west of Glenns Ferry, Elmore Co., southwestern ID.

Source: US geologic names lexicon (USGS Bull. 1350, p. 519).


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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