Palaeomagnetism of the monzonite porphyry from Milton,New South Wales |
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| Authors: | William A Robertson |
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| Institution: | (1) Department of Geophysics, Australian National University, Canberra;(2) Present address: Geomagnetic Division, Dominion Observatory, Ottawa, Ontario, Canada |
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| Abstract: | Summary Directions of natural remanent magnetization aftermagnetic cleaning of specimens from monzonite porphyry at Milton are given. Thermal and alternating magnetic field stability tests indicate that the resultant direction is that of the earth's magnetic field at the time of cooling. Comprison of the pole position calculated from this result with other pole positions from rocks of known age confirms the probable Permian age of the intrusion and the wide divergence of Australian from European and North American pole positions of this age. |
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