Physical properties, compressional-wave velocity, and consolidation characteristics of slope sediments, Townsville Trough, northeast Australia.

Abstract

Bulk density, void ratio or porosity, water content, and compressional-wave velocity are shown to have a linear relationship with burial depth. Between 3.5 and 5Ma (about 100-500 mbsf), these physical properties maintained a constant rate vs. the depth in core because of the fast sedimentation-rate effect at Site 815. However, compressional-wave velocity still increases downward in this section. The clay content in this section causes an increase of bulk modulus and compaction effect. At Site 817, scarce terrigenous mud content and abundant carbonate (88%-97%) cause a straight line relationship between physical properties and burial depth. -from Authors