Publication Date:
1981-01-01
Description:
The effects of incremental partial thermal demagnetization on the low-field magnetic susceptibility anisotropy have been studied by heating samples to successively higher temperatures and measuring the anisotropy after cooling in air from each temperature increment. A variety of rock types including red beds, tillites and volcanic rocks have been used. The most interesting result from this experiment is related to the directional behaviour of the principal susceptibilities. In some cases the directions were very stable to the treatment but, where a sufficient number of samples was available, a reduction in the scatter was still observed. In other cases where directional changes occurred, a reduction in scatter with the treatment was observed and the 'high temperature' directional pattern agreed with the geologic information. Further work is needed to understand the effects of heating at increasing temperatures on the magnetic anisotropy of rocks. © 1981, Society of Geomagnetism and Earth, Planetary and Space Sciences. All rights reserved.
Print ISSN:
0022-1392
Topics:
Geosciences
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