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地球学报  2004 

长白山天池火山水热活动及气体释放特征

Keywords: 长白山火山,水热活动,气体地球化学,幔源

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Abstract:

长白山天池火山属于新生代大型多成因复式火山,位于吉林省东部中-朝边境上。天池火山周围水热活动比较强烈,主要的水热活动区有天池北部的长白温泉群、天池湖滨温泉和天池西南的锦江泉群。长白聚龙泉群水温较高,一般为70~83℃,湖滨温泉水温20~40℃,锦江泉群水温为58℃左右。长白聚龙泉群水热活动相对更为强烈。在水热活动区,地下气体活动也相当强烈,地下释放气体的主要成分是CO2,同时含有稀少气体He、Ar和微量气体H2、CH4及少量O2和N2。长白和锦江两处泉群的地下释放气体中,其气体同位素地球化学特征表明,两处

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