断裂带中汞的地球化学特征

Geochemistry of mercury in the fault zone

汞是揭示构造活动及强震孕育机制的重要化学示踪元素.研究断裂带中汞及其同位素,可以示踪地震断裂带汞异常来源、汞的迁移路径,从而揭示流体在地震孕育中的作用.本文总结了汞的观测技术,断裂带岩石、土壤和地下水中汞的特征,概述了汞同位素技术在深部断裂带研究中的进展,以及汞在地震监测和活断层探测方面的应用.断裂带中汞的研究,将有助于厘清汞-深部流体-构造活动-地震的可能关系及其机制,对提升汞在地震监测预测中的研究水平具有重要的理论意义和应用价值.

As an important chemical tracer, mercury can reveal tectonic activity and mechanism of strong earthquakes preparation. Research on mercury and its isotopic composition in fault zones can be used for tracing sources of mercury anomalies within fault zone, analyzing the migrated paths of mercury, and determining the role of fluid in seismogenesis. This paper summarizes the analytical method of mercury as well as its characteristic in rock, soil and groundwater in the fault zone, introduces the recent progress of mercury stable isotopes in the deep fault zone, and overviews its applications on earthquake monitoring and the detection of active faults. This study aims to further explore the relationships and mechanisms of mercury, deep fluid, tectonic activity and earthquake. Research on mercury and its isotopes in fault zone may have important scientific significance and applied value in further study about the role of mercury observations in earthquake monitoring and prediction.