Fixation of remanent magnetization with compaction in deep- sea environment.

Abstract

Laboratory experiments revealed that a post-depositional process plays a substantial role in detrital remanent magnetization (DRM) and that a time (depth) lag exists between deposition and fixation of remanent magnetization. According to the zone-magnetization model remanent magnetization becomes gradually permanent within a finite thickness of subsurface sediments. Experiments showed that post-depositional remanent magnetization (PDRM) is acquired together with an increase in density of the sediments. This paper shows subsurface changes in density and magnetization of siliceous clay, and examines whether the results of the laboratory experiments can be applied to the natural deep-sea environment. -from Author