Natural remanent magnetizations of some intrusive rocks from the Sør Rondane Mountains, Queen Maud Land, Antarctica

Eighteen samples from three different intrusive rocks from the Sør Rondane Mountains (East Antarctica) contained a NRM with consistent directions around 341°, +64°. This result is similar to the NRM direction of the gneisses from the Ongul Island and Lützow-Holm Bay, which belong to the same complex. It is argued that the NRM dates from the latest thermal event in this region, which is indicated by the Rb-Sr age of the biotites of the rocks as being 480 m.y. for the Sør Rondane intrusives. If it is assumed that the NRM reflects the local geomagnetic field direction in the Lower Ordovician, some tentative conclusions for the position of Antarctica in Gondwanaland can be advanced.