A Palaeomagnetic Study of the Gaberones Granite of Botswana

Thirty-two cores were drilled at eleven sites in a variety of granitic rock-types. Meaningful results were obtained from seven sites after alternating field demagnetization and there is good evidence for the stability of the magnetization observed. The specimens exhibit a wide range in initial intensity of magnetization but no relationship exists between rock-type, initial intensity and behaviour under a. f. demagnetization. In all cases the within-site scatters are large and the possibility that this is a fundamental property of the remanent magnetization of large granitic bathyliths is discussed.