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地震区温泉气体的地球化学特征 总被引：11，自引：0，他引：11
澜沧和巴塘地震区温泉气体的化学组成和He,Ar,CH_4(δ~(13)C)同位素组成的研究结果表明,He,H_2和非大气成因N_2的浓度以及~3He/~4He值与地震活动关系密切,地震活动过程中,气体的释放与岩石在应力作用下所呈现的力学特性——扩容性有关,两个地震区地震震级(能量)的对比研究表明,震级大,能量大,从岩石中气体释放量显著增加,温泉气体作为地震预报指标,下列参数更为有效:He,~3He/~4He,H_2和N_(2-B)/N_(2-总)。 相似文献
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This paper makes an approach to the characteristics of the compound and carbon iso-topic composition of condensate in the Sichuan, Shaanxi-Gansu-Ningxia, Dongpu and Jiyangbasins in China. The results we have obtained show that the compound properties are re-lated to the maturity. The Paraffin Index Ⅰ and the Saturated-Aromatic Index (SAI) increasegradually from the immature to mature (or over mature) condensate. and the SAI valueincrease from 2 to more than 30. The carbonisotopic composition of condensate is control-led by the type of parent matter. If the oil and condensate come from the same source rock,they will have similar carbon isotopic composition. In the same region there is an obviousdifference in carbon isotopic composition between the condensate generated from coal-bear-ing strata and that from oil-source rocks. The difference can be regarded as a parameter fordistinguishing the coal-type gas from the oil-type gas. In the same basin the carbon isotop-ic composition of the natural gas-oil-co 相似文献
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Chemical and isotopic compositions of He, Ar, CH4(δ13C) of hot spring gas in Lancang and Batang earthquake regions show that the concentrations of He , H2 , non-atmospheric sourced N2 and 3He/4He value are closely related to seismic activity. During earthquake activity, gas release is related to the dilation that rocks take on under stress action. Earthquake magnitude (energy) between the two seismic regions suggests that the amount of released gas from rocks increases significantly with the increase of magnitude and energy. As indicators of earthquake prediction, the following parameters of gases from hot spring are effective: He, 3He/4He, H2 and N2B/N2total. 相似文献
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