Hotspot motion and radiometric ages along hotspot tracks
With Anthony Koppers and Robert Duncan, the modelled age progression along Louisville and Hawaii hotspot tracks was compared to radiometric ages along the tracks (shown here on a perspective image of the Hawaii-Emperor chain), under special consideration of re-dated samples along the Louisville track. We could show that with modelled hotspot motion the re-dated ages could be fit better than with fixed hotspots. For the Samoa hotspot, the modelled and observed hotspot tracks and age progression are compared in a paper by
Stan Hart.
- Koppers, A.A.P., R.A. Duncan and B. Steinberger (2004).
Implications of a non-linear 40Ar/39Ar age progression along the Louisville seamount trail for models of fixed and moving hotspots, Geochem. Geophys. Geosyst., 5, Q06L02, doi:10.1029/2003GC000671
[pdf]
- Hart, S.R., M. Coetzee, R.K. Workman, J. Blusztajn, K.T.M. Johnson, J.M. Sinton, B. Steinberger and J.W. Hawkins (2004).
Genesis of the Western Samoa Seamount Province: age, geochemical fingerprint
and tectonics, Earth Planet. Sci. Lett., 227, 37-56,
doi:10.1016/j.epsl.2004.08.005
[abstract]
[pdf]
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