江苏郯庐断裂带断层气测量与地球化学特征

Fault Gas Measurements and Geochemical Characteristics in Jiangsu Section of the Tan-Lu Fault Zone

对郯庐断裂带江苏段断层气体CO_2、Rn以及Hg浓度进行测量,选择在重岗、晓店、桥北和何庄四个跨断层测点。确定了各剖面上断层气体的地球化学特征的背景值和异常下限值,然后计算出郯庐断裂带江苏段的断层气异常衬度值数据结果。断层气体的浓度值异常主要集中分布在断裂带内及附近,活动断裂带地震活动性和断层气体的浓度值异常有很好的一致性。

The paper measured the concentration of fault gas（CO2, Rn and Hg） of Jiangsu section in Tanlu fault zone, by selecting the measuring points located in Chonggang, Xiaodian, Qiaobei and Hezhuang four faults. The paper determined the background value and the lower limit abnormal value of geochemical characteristics of each cross section of the fault, and calculated the fault gas abnormal contrast results of Jiangsu section in the fault zone. Fault gas（ CO2, Rn and Hg） concentrations anomalies mainly distributed in the fracture zone and its adjacent area, the seismic activity active fault and the concentration anomalies of soil gas anomalies have good consistency.