sentences:  These phase changes are accompanied by a decrease in porosity of the ooze which becomes manifest as a compaction of the sediment.The compaction of radiolarites is dependent on their chemical composition and correlates positively with the original SiO2-content.The compaction factor varies generally between 3.2 and 5, which means that 1 meter of consolidated sediment is equivalent to 3.2 to 5 meters of ooze.