A further contribution to the petrology of Haleakala volcano, Hawaii

Geological Society of America Bulletin
By:  and 



Sixteen new chemical analyses of the later rocks of Haleakala Volcano, on the island of Maui, Hawaii, add to the differentiation picture for that volcano. The early rocks of the volcano are tholeiitic. These are followed by dominant hawaiites with less abundant alkalic olivine basalts, picrite-basalts of ankaramite type, and a few mugearites. Still later rocks, separated from earlier ones by a profound erosional unconformity, include some hawaiites and ankaramites, but are dominantly alkalic olivine basalts (basanitoids) containing as much as 16.5 percent normative nepheline, some of them transitional to ankaramite. The progression toward ultramafic, strongly undersaturated rocks (nephelinites), characteristic of the post-erosional lavas of other Hawaiian volcanoes, appears to have just begun at Haleakala.

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Publication type Article
Publication Subtype Journal Article
Title A further contribution to the petrology of Haleakala volcano, Hawaii
Series title Geological Society of America Bulletin
DOI 10.1130/0016-7606(1968)79[877:AFCTTP]2.0.CO;2
Volume 79
Issue 7
Year Published 1968
Language English
Publisher Geological Society of America
Description 12 p.
First page 877
Last page 888
Country United States
State Hawaii
Other Geospatial Maui
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