Abstract
DUNCAN et al.1 have analysed the igneous activity in the Central Volcanic province of Europe and the Thulean province of Iceland, the Faeroes and the British Isles on the assumption that these provinces represent plume traces. Assuming that plumes are fixed to the mantle and that plume traces are due to lithospheric plate motion only, Duncan et al. showed that the motion of the European plate over the past 50 m.y. is not in accord with palaeomagnetic data unless motion of the mantle with respect to the rotation axis (polar wandering) has occurred. Polar wandering of 23° along the 123° meridian was required since the early Tertiary.
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