Figure F20. Isothermal remanent magnetization (IRM) and backfield acquisition curves for representative discrete samples from Site 1123. A. Samples from above 597 mcd (lithostratigraphic Units I-III), remanence saturates by 500 mT, and B_cr is between 25 and 75 mT. B. Samples from below 597 mcd (lithostratigraphic Unit IV), remanence saturates at ~1 T, and B_cr is between 75 and 100 mT.