Effect of compaction on the acquisition of a detrital remanent magnetization in fine‐grained sediments

Abstract

Summary. Measurements of the detrital remanent magnetization (DRM) of redeposited deep‐sea sediment of the silty clay grade are described. Variations in the magnitude of an observed remanence inclination error are related to conditions of sediment accumulation, contrasted here as grain‐by‐grain settling from a dilute dispersion or by settling from a concentrated slurry. For these artificial redepositions post‐depositional compaction is shown to be a major factor in shallowing the observed inclination from the ambient field inclination. The term compactive DRM is tentatively assigned to describe such behaviour. Copyright © 1978, Wiley Blackwell. All rights reserved