Remanent magnetism of late secondary and early tertiary british rocks

Abstract

The results of palaeomagnetic measurements are given both for the Tertiary basalts of North Eastern Ireland, and for the Cretaceous sediments in the south of England. The direction of magnetization of the basalts is consistently shallower than the present dipole field direction by about 8°. The Cretaceous results are shown to be much less likely to be reliable, but also indicate a shallower dip than that of the present dipole field. A simple and reliable statistical treatment is developed for use with palaeomagnetic data.