5 - Diagenesis

Diagenesis vs. MetamorphismControls on Diagenesis• Movement of pore fluids• Meteoric/surface waters into sedimentarybasins• Potentiometric head defined by ground watertable – above sea level, pore fluids will readilyflow into marine sedimentary basins• Thermal convection• Inverse density gradient caused by thermalexpansion of water (batholiths, salt domes, etc.)• Compaction• Porosity reduction drives interstitial watersupwardShallow Carbonate DiagenesisBoggs 2001