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Sampling for palaeomagnetic purposes has been undertaken in the western part of Dronning Maud Land, Antarctica. The study area comprises three mountain ranges bounded by latitudes 72° S to 73° S and longitudes 4° W to 2° E (Fig 1). The fieldwork has been completed over three consecutive summer seasons starting in 1986/87. A total of 170 sites have been sampled covering most of the rock types in the two primary geological terrains.