SUMMARY

  1. GHMT data provide important polarity stratigraphy information at Sites 986 (Forsberg et al., Chap. 17, this volume) and 987 (Channell et al., Chap. 10, this volume) and facilitate age interpretation of magnetic reversal events and lithologic boundaries.
  2. Detailed analysis of Hole 984B magnetic susceptibility record measured by the SUMT yields an empirical maximum resolution of ~53 cm. This corresponds to temporal resolution of ~5 k.y. for Hole 984B.
  3. Statistical comparisons of core and log magnetic susceptibility observations for Hole 984B give a r2 = 0.81 in the upper 260 mbsf. Poor core recovery decreases the correlation to r2 = 0.65 in the section between 260 and 500 mbsf.
  4. Preliminary core-log integration using magnetic susceptibility for Hole 984B demonstrates obvious susceptibility cycles that are missing in the core data from the XCB portion of the hole (>290 mbsf) despite the higher sampling resolution of the MST measurements.
  5. A revised mcd core magnetic susceptibility record has been produced for Site 984 over the upper 260 mbsf, which includes all susceptibility measurements from the four holes.
  6. Integrating GHMT and core data may help provide both better age and data coverage (which has implications for improved stratigraphy), sedimentation rate estimates, and depth-scale correlation.

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