Figure F3. Field geometry at Site 1096, showing the remanent and induced magnetizations (Jr and Ji) in the formation and the remanent and induced field anomalies they cause in the borehole (Bfr and Bfi). Given a sediment magnetization (Jr) of 0.1 A/m, the observed anomaly in the borehole (Bfr) is 80 nT (see "Relationship of the Field in the Borehole to the Magnetization of the Sediment," ). Note that the fields in the borehole do not have the same direction as the sediment magnetizations that produce them. This can be verified in the actual data: for example, below 409 mbsf in Hole 1096C, the sediment has a reverse magnetization and the anomaly in the total field log is positive (Fig. F4, , middle graph).

Figure F3. Field geometry at Site 1096, showing the remanent and induced magnetizations (J_r and J_i) in the formation and the remanent and induced field anomalies they cause in the borehole (B_fr and B_fi). Given a sediment magnetization (J_r) of 0.1 A/m, the observed anomaly in the borehole (B_fr) is 80 nT (see "Relationship of the Field in the Borehole to the Magnetization of the Sediment"). Note that the fields in the borehole do not have the same direction as the sediment magnetizations that produce them. This can be verified in the actual data: for example, below 409 mbsf in Hole 1096C, the sediment has a reverse magnetization and the anomaly in the total field log is positive (Fig. F4, middle graph).