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Age of Ko??ko Seamount, Emperor Seamount chain

Earth and Planetary Science Letters

By:
and

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Abstract

KAr ages obtained by the conventional isotope-dilution and the 40Ar/39Ar techniques on two sanidine trachytes, four basalts, and a phonolite dredged from the top of Ko??ko Seamount, 300 km north of the Hawaiian-Emperor bend, show that the seamount is 46.4 ?? 1.1 my old. These data indicate that the volcanoes in the Hawaiian-Emperor chain continue to increase in age to the west and north beyond Midway Atoll, as predicted by the melting-spot hypothesis for the origin of the chain, and that the rate of volcanic migration along the chain was nonlinear between the time of formation of the island of Hawaii and Ko??ko Seamount. ?? 1973.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Age of Ko??ko Seamount, Emperor Seamount chain
Series title:
Earth and Planetary Science Letters
Volume
17
Issue:
2
Year Published:
1973
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Earth and Planetary Science Letters
First page:
411
Last page:
415