Specific Features of the Behavior of Diagenesis Products in Rocks of Seismically Active Regions

Cretaceous and Paleogene sedimentary sequences of the eastern Caucasus show the traces of vertical migration of gel-type diagenetic products (silica, iron sulfides). Signs of the migration of SiO2 compounds were recorded in the carbonate rocks with an admixture of biogenic silica; the traces of sulfide migration are confined to the alternation of limestone and OM-rich clayey marls. The migration of authigenic diagenetic products was initiated by the impact of earthquakes and associated horizons of destructed rocks. Such migration is typical of seismically active zones, which determines the specifics of diagenetic processes in the paleobasins of mobile regions and make them different from postsedimentary transformations in cratonic rocks.