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Geologic Unit: Olaa
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Map showing publication footprint
  • Usage in publication:
    • Olaa agglomerate
  • Modifications:
    • Named
  • Dominant lithology:
    • Basalt
  • AAPG geologic province:
    • Hawaii
Publication:

Wentworth, C.K., 1938, Ash formations of the Island of Hawaii: U.S. Geological Survey [Hawaiian Volcano Observatory Special Report], no. 3, 183 p.


Summary:

Named for surface exposures inland from Olaa and Camp Two on Waiakea Plantation Railroad, E Slope of Mauna Loa [now occupied by Waiakea Homesteads, Hilo 7.5' quad] Island of Hawaii, HI. Composed of fragmental aa accumulated in mounds 5 to 25 ft high. Underlies Glenwood tuff.

Source: GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Olaa agglomerate
  • Modifications:
    • Not used
  • AAPG geologic province:
    • Hawaii
Publication:

Stearns, H.T., and Macdonald, G.A., 1946, Geology and ground-water resources of the Island of Hawaii: Hawaii Division of Hydrography Bulletin, no. 9, 363 p., (incl. geologic map, scale 1:125,000)


Summary:

Aa flows near Olaa now part of Kau volcanic series. [age of Kau volcanic series is late Pleistocene(?) and Recent]

Source: GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Olaa agglomerate
  • Modifications:
    • Age modified
    • Not used
  • AAPG geologic province:
    • Hawaii
Publication:

Macdonald, G.A., and Davis, D.A., 1956, Zone des Hawaii, Chapter 2, IN Avias, Jacques, and others, Oceanie proprement dite; Fasc. 2 of V. 6, Oceanie: Lexique Stratigraphique International, p. 70-143(?)., Prepared by the Centre National de la Recherche Scientifique (Paris), International Geological Congress, Commission on Stratigraphy


Summary:

Now known to be fragmental tops of aa flows of Kau volcanic series (Stearns and Macdonald, 1946). Assigned late Pleistocene(?) and Recent age.

Source: GNU records (USGS DDS-6; Menlo GNULEX).


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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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