Pg. 55; and G.A. Macdonald and D.A. Davis IN Jacques Avias and others, 1956 (Lexique Strat. Intl., v. 6, Oceanie, fasc. 2, p. 76-77). /Aliamanu basalt [Name preoccupied.] Included in middle part of Honolulu volcanic series. Is a melilite nepheline basalt. Overlain by 47 feet of Salt Lake tuff; underlain by 17 feet of alluvium which rests on Koolau basalt. Macdonald and Davis (1956, p. 76) state "It appears to be lava erupted at the close of the explosive phase of the Aliamanu vent, hence is correlative with the Aliamanu tuff." Age is Pleistocene.
Occurs in subsurface, between 62 and 93 feet in well. Penetrated only in one well, hence extent not known.
Named from Aliamanu Crater, within which it occurs, [Aliamanu Military Reservation, approx. Lat. 21 deg. 21 min. 35 sec. N., Long. 157 deg. 54 min. 43 sec. W., Pearl Harbor 7.5-min quadrangle, Honolulu Co.], Island of Oahu, HI.
[Additional locality information from USGS GNIS database and USGS historical topographic map collection TopoView, accessed on July 20, 2023. Hawaiian spelling: Āliamanu Crater (U.S. Board on Geographic Names, 2000).]
Source: US geologic names lexicon (USGS Bull. 1200, p. 50); GNU records (USGS DDS-6; Menlo GNULEX).
Aliamanu Tuff (Stearns, IN Stearns and Vaksvik, 1935) and Aliamanu Basalt (Stearns, 1940) are abandoned as formally named units and renamed Aliamanu flow (and associated cone), informal unit of Honolulu Volcanics. Honolulu Volcanics is assigned Pleistocene and Holocene(?) age [but flow is most likely Pleistocene based on earlier authors' estimates].
Source: GNU records (USGS DDS-6; Menlo GNULEX).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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