Usage:
Masefau Dike Complex (AS*)
Geologic age:
late Tertiary to Quaternary (Pliocene to early Pleistocene)*
Due to change in Plio-Pleistocene boundary, age may now be considered all or in part Pleistocene.
Type section, locality, area and/or origin of name:
Notable exposures on east side of Afono Bay, in Bartlett Island off Masefau Bay, and in promontory opposite island. Named from latter locality which is near Masefau village, [Tutuila Island East 7.5-min quadrangle, Tutuila Island, American Samoa] (Stearns, 1944).
AAPG geologic province:
Samoa Islands*
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 ([ ]).