Stirred remanent magnetization: a laboratory analogue of post-depositional realignment

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P. Tucker


The remanent magnetization acquired by a slurry stirred in a magnetic field was measured as a function of the applied field, stirring rate and water content. The experimental results were fitted by a theoretical model in which the stirring process was approximated as a periodic randomization of the grains. The acquired remanence was proportional to the applied magnetic field and independent of the stirring rate only for weak fields ( <160 A/m) and slow stirring rates ( <10 rad/s). The remanent intensity decreased with decreasing water content. The implications for the laboratory modelling of post-depositional remanent magnetization are discussed.

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Tucker, P. 1980. “Stirred Remanent Magnetization: A Laboratory Analogue of Post-Depositional Realignment”. Journal of Geophysics 48 (1), 153-57.
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