A review of possible mechanisms for mercury migration in diagenesis: Clay to pyrite

Though sedimentary mercury in marine sediments has been regarded as a geological indicator of volcanic activity based on volcanism is the dominant natural source Hg to oceans, influence diagenesis cannot be dismissed. Marine mudstone selected explore migration from syn-sedimentary stage diagenetic this review. mudstones undergo series significant transformation processes, including illitization smectite and formation framboidal pyrite aggregates during stage. This process makes adsorption capacity minerals change significantly that clay are weakened, while pyrites enhanced. In reason, it inferred may re-migrate pyrite. at least means indication by enrichment need re-evaluated.