Figure F31. (A) Isothermal remanent magnetization (IRM) acquisition and (B) thermal demagnetization of the IRM on several representative discrete samples. Saturation of isothermal remanent magnetization acquisition is consistent with a fine-grained magnetite, perhaps with a single-domain component (e.g., Dunlop and Ozdemir, 1997).

Figure F31. (A) Isothermal remanent magnetization (IRM) acquisition and (B) thermal demagnetization of the IRM on several representative discrete samples. Saturation of isothermal remanent magnetization acquisition is consistent with a fine-grained magnetite, perhaps with a single-domain component (e.g., Dunlop and Ozdemir, 1997).