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Map showing publication footprint
  • Usage in publication:
    • Kumuiliahi Formation*
  • Modifications:
    • Named
  • Dominant lithology:
    • Basalt
  • AAPG geologic province:
    • Maui
Publication:

Macdonald, G.A., 1978, Geologic map of the crater section of Haleakala National Park, Maui, Hawaii: U.S. Geological Survey Miscellaneous Investigations Series Map, I-1088, 1 sheet, 8 p., scale 1:24,000 [http://ngmdb.usgs.gov/Prodesc/proddesc_8941.htm]


Summary:

Type locality: rocks in lower part of wall of Haleakala north and northeast of Kumuiliahi Peak [20 deg 42' 16"N, 156 deg 12' 09"W, Kaupo 7.5' quad] Haleakala National Park, Island of Maui. Formerly assigned to Honomanu Volcanic Series by Stearns and Macdonald (1942). Here reassigned to Kumuiliahi Formation (new). Exposed in south wall of crater and in small knob at east edge of Koolau Gap. Composed of alkalic olivine basalt (thin-bedded pahoehoe and aa lava flows) with white phenocrysts of plagioclase feldspar up to 8 mm long and basaltic hawaiite. Lower contact not exposed; separated from overlying Kula Formation by angular unconformity. K-Ar ages are considered unreliable. Map shows Pleistocene age; text says "tentatively assigned Pleistocene age".

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


Map showing publication footprint
  • Usage in publication:
    • Kumuiliahi Formation*
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Maui
Publication:

Macdonald, G.A., Abbott, A.T., and Peterson, F.L., 1983, Volcanoes in the sea, the geology of Hawaii: University of Hawaii Press, 2nd edition, 517 p.


Summary:

"In the lower part of the S wall of Haleakala Crater ... is a series of thin pahoehoe flows of basalt ... and the thin pahoehoe flows ... were thought probably to belong to the Honomanu series" (Stearns and Macdonald, 1942, p.72). "Later chemical studies show, however, that the basalt [Kumuiliahi Formation] is markedly alkalic, and it now appears probable that the lavas are a part of the Kula Series" (p.390-391).

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


Map showing publication footprint
  • Usage in publication:
    • Kumuiliahi Formation
  • Modifications:
    • Not used
  • AAPG geologic province:
    • Maui
Publication:

Langenheim, V.A.M., and Clague, D.A., 1987, Stratigraphic framework of volcanic rocks of the Hawaiian Islands, Part II, IN The Hawaiian-Emperor volcanic chain, Chapter 1, OF Decker, R.W., Wright, T.L., and Stauffer, P.H., eds., Volcanism in Hawaii: U.S. Geological Survey Professional Paper, v. 1, 1350, p. 55-84. [http://ngmdb.usgs.gov/Prodesc/proddesc_42485.htm]


Summary:

Rocks of Kumuiliahi Formation (Macdonald, 1978) appear more properly to belong to Kula (Macdonald and others, 1983, p.391) and here tentatively included in Kula Volcanics. Name "Kumuiliahi Formation" is not used.

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


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Asterisk (*) indicates published by U.S. Geological Survey authors.

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