地震地质 ›› 1992, Vol. 14 ›› Issue (3): 251-258.

• 科研简报 • 上一篇    下一篇

黑龙江五大连池火山区气体地球化学特征

高清武   

  1. 国家地震局地质研究所 北京 100029
  • 收稿日期:1990-07-31 出版日期:1992-09-09 发布日期:2009-11-25
  • 基金资助:
    地震科学联合基金(87004)

GEOCHEMICAL CHARACTERISTICS OF GASES IN WUDALIANCHI VOLCANIC AREA OF HEILONGJIANG PROVINCE

Gao Qingwu   

  1. Institute of Geology, SSB, Beijing 100029
  • Received:1990-07-31 Online:1992-09-09 Published:2009-11-25

摘要: 根据五大连池火山区的气体地球化学特征,分析了二氧化碳气的生成条件和成因,对火山区CO2的泄出量进行了概算。通过一年定点观测,查明了南泉和二龙眼泉各气体组分的动态变化特征,认为南泉氢和氦于1988年2月~4月出现的大幅度异常和附近的小震活动有关。

关键词: 黑龙江, 五大连池, 现代火山, 气体地球化学

Abstract: A systematical study of geochemical characteristics of gases in Wudalianchi volcanic area leads us to find that the main component of the gases is CO2 and minor components are rare gas He,microgas H2 and radioactive gas Rn.The gases are characteristic of post eruption volcanic gases.In plane distribution,CO2 ejects in Laoheishan and Huoshaoshan latest eruption activity zone and tectionic activity area.The formation conditions and origin of CO2 are analysed,and release amount of CO2 is also roughly estimated.From February to April,1988,H2 in the South Spring exhibits large-amplitude positive anomaly variation.We think it has ralation with nearby small earthquake cluster.The discover and study of a gas hole in ice cave at Laoheishan volcanic crater is important for monitoring and studying future volcanic activity.The gas from the volcanic gas hole is a mixed gas composed of He,H2 and CO2.We think this volcanic gas hole is related with deep structure and lalest volcanic eruption.

Key words: Heilongjiang, Wudalianchi, Recent volcano, Gas geochemistry