The structural aerogeochemistry process along the earthquake-generating fault of the Haiyuan (MS8.5 earthquake) in 1920 is discussed based on the exprimental result.The degassing on the Haiyuan active fault is mainly crust degasification,in which the contents are mainly from middle-upper crust.The degassing intensity is closely correlated to the fault stress state as well movement characteristics.The different degassed elements reflect different depth and characteristics.Radon reflects shallow depth and tension,mercury and Helium reflect relative deep depth,and hydrogen reflects obduction or nappe or rock-water reaction on the fault surface.
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姜大庸,陈文彬,石雅留.海原活动断裂的地壳脱气作用[J].地震工程学报,2000,22(4):447-451,464. JIANG Da-yong, CHEN Wen-bin, SHI Ya-liu. THE CRUST DEGASIFICATION ALONG THE HAIYUAN ACTIVE FAULT[J]. China Earthquake Engineering Journal,2000,22(4):447-451,464.