Early diagenetic overprint

Early diagenetic processes are not restricted to the sediment/water interface or shallow aquatic deposits but can well extend into deeper layers of the sediment. Therefore, the primary sediment composition can be heavily overprinted several hundreds to thousands of years after deposition. The most important biogeochemical/early diagenetic processes that potentially occur over depth as well as the particular impact on the composition of the sedimentary solid phase are shown in the figure below.