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Age of Kōko Seamount, Emperor Seamount chain

Earth and Planetary Science Letters

By:
and
DOI: 10.1016/0012-821X(73)90209-4

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Abstract

Ksingle bondAr 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.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Age of Kōko Seamount, Emperor Seamount chain
Series title:
Earth and Planetary Science Letters
DOI:
10.1016/0012-821X(73)90209-4
Volume
17
Issue:
2
Year Published:
1973
Language:
English
Publisher:
Elsevier
Description:
5 p.
First page:
411
Last page:
415
Online Only (Y/N):
N
Additional Online Files(Y/N):
N