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National Geologic Map Database
Geologic Unit: Halape
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Map showing publication footprint
  • Usage in publication:
    • Halape Member
  • Modifications:
    • [Areal extent]
  • Dominant lithology:
    • Ash
  • AAPG geologic province:
    • Hawaii
Publication:

Easton, R.M., and Garcia, M.O., 1980, Petrology of the Hilina Formation, Kilauea Volcano, Hawaii: Bulletin Volcanologique, v. 43, no. 4, p. 657-673.


Summary:

Stratigraphic column. Halape Member of Hilina Formation. Oldest member (of 4) of Hilina Formation. Underlies Kahele Member (new). Overlies lava flows estimated to be between 100,000 yr to 70,000(?) yr B.P.
[Named from Halape, on the south flank of Kilauea Volcano, Hawaii Volcanoes Wilderness, southern coast of Island of Hawaii, HI. Hawaiian spelling: Halapē (U.S. Board on Geographic Names, 1999).]

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


Map showing publication footprint
  • Usage in publication:
    • Halape Member
  • Modifications:
    • Age modified
  • AAPG geologic province:
    • Hawaii
Publication:

Decker, R.W., and Christiansen, R.L., 1984, Explosive eruptions of Kilauea Volcano, Hawaii, IN Explosive volcanism; inception, evolution, and hazards; studies in geophysics: National Research Council, Geophysics Study Committee [Report], p. 122-132., Prepared in cooperation with DOE


Summary:

Pyroclastic unit named by Easton and Garcia (1980) is oldest member of 4 of Hilina Formation. Covers area of approx. 1000 sq km. Consists of 10- to 50-cm-thick deposit of poorly bedded clay and palagonite. Separated from other members by major sequences of lava flows. Age is estimated to be 70,000 yr B.P.

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


Map showing publication footprint
  • Usage in publication:
    • Halape Ash Member*
  • Modifications:
    • [Principal reference]
    • Redescribed
    • Areal extent
  • AAPG geologic province:
    • Hawaii
Publication:

Easton, R.M., 1987, Stratigraphy of Kilauea Volcano, Chapter 11, IN Decker, R.W., Wright, T.L., and Stauffer, P.H., eds., Volcanism in Hawaii: U.S. Geological Survey Professional Paper, v. 1, 1350, p. 243-260. [Available online from the USGS PubsWarehouse: http://pubs.er.usgs.gov/pubs/pp/pp1350]


Summary:

Halape Ash Member of Hilina Basalt. Name changed to reflect lithology and volcanic origin. Age estimated to be between 100 ka and 31 ka, based on age estimate for base of Hilina Basalt (Easton, 1978, Univ. Hawaii-Honolulu MS thesis).
Type section: at Keana Bihopa (395 m elevation), Lat. 19 deg. 17 min. 19 sec. N., Long. 155 deg. 18 min. 25 sec. W., Kau Desert 7.5' quadrangle, [on south flank of Kilauea Volcano, Hawaii Volcanoes Wilderness, Hawaii Co.], Island of Hawaii, HI.
Reference section: at Puu Kapukapu, Lat. 19 deg 16 min. 45 sec. N., Long. 155 deg. 15 min. 35 sec. W., Kau Desert 7.5' quadrangle, [on south flank of Kilauea Volcano, Hawaii Volcanoes Wilderness, Hawaii Co.], Island of Hawaii, HI.
Named from Halape, cape at base of Puu Kapukapu. [Hawaiian spelling: Halapē (U.S. Board on Geographic Names, 1999).]

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


Map showing publication footprint
  • Usage in publication:
    • Halape Ash Member*
  • Modifications:
    • Redescribed
  • AAPG geologic province:
    • Hawaii

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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 ([ ]).