Usage:
Koolau Basalt (HI*)
[Hawaiian spelling: Koʻolau (U.S. Board on Geographic Names, ca. 2000).]
Subunits:
Kailua Member (HI*).
Geologic age:
late Tertiary to Quaternary (Pliocene to Pleistocene?)*
Type section, locality, area and/or origin of name:
Principal reference locality: Nuuanu Pali on northeast side of Koolau Range [Lat. 21 deg. 22 min. 13 sec., N., Long. 157 deg. 47 min. 49 sec., W., Honolulu 7.5-min quadrangle] Island of Oahu, HI (Langenheim and Clague, 1987).
AAPG geologic province:
Oahu
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 ([ ]).