Age of Kōko Seamount, Emperor Seamount chain
Earth and Planetary Science Letters
By: David A. Clague and G. Brent Dalrymple
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Abstract
K—Ar 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 Kōko 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 Kōko Seamount.
Study Area
| 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 |
| Other Geospatial | Kōko Seamount |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |