All three assemblages indicate middle to lower bathyal paleodepths. The interpretation is problematic because the same result was not reproduced in Hole 1133A, which yield uniform normal polarity magnetizations to a depth of 20 mbsf, and anomalously shallow magnetizations of both polarities below this depth. Intensity fluctuations are closely correlated with lithology in both holes, but appear to be inversely correlated with magnetic susceptibility. Anomalously high intensities and susceptibilities are observed in both holes at about 30 mbsf. Rock magnetic properties are consistent with single-domain biogenic magnetite or greigite as the remanence carrier.
Magnetic susceptibility is dominated by contributions from the diamagnetic carbonate matrix.
This depth interval includes Holocene and Pleistocene to early Miocene age sediments. Distinctive high amplitude events occur in the reflectance and GRA density records, enabling easy correlation between holes.