Experimental compaction of modern carbonate sediment from five Bahamian facies has produced spalling of oolite borders, grain interpenetration, fractures, and other features found in natural limestones. These features can be related to sediment type, and to pressure, compaction, and porosity conditions. Most of the sediment types tested show a marked initial compaction below about 30 bars pressure, but above 350 bars the compaction curves are nearly parallel. Even with large differences in initial and final porosity, all show approximately 35 percent porosity at 120 bars pressure; the porosity decreases with increasing pressure.

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