What do the HIRM and S-ratio really measure in environmental magnetism?
The "hard" isothermal remanent magnetization (HIRM) and the S-ratio are widely used in environmental magnetism to quantify the absolute and relative concentrations, respectively, of antiferromagnetic minerals (hematite and goethite) in mineral mixtures. We demonstrate that synthetic Al-substituted hematite and goethite exhibit a wide range of coercivities, which significantly influences the HIRM and S-ratio. These parameters are therefore not necessarily straightforward indicators of the...[Show more]
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|Source:||Geochemistry, Geophysics, Geosystems. G3|
|01_Liu_What_do_the_HIRM_and_S-ratio_2007.pdf||3.3 MB||Adobe PDF||Request a copy|
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