地震地质 ›› 1999, Vol. 21 ›› Issue (4): 437-442.

• 地球化学 • 上一篇    下一篇

云南腾冲地区现代地热流体活动类型

上官志冠1, 孙明良2, 李恒忠3   

  1. 1. 中国地震局地质研究所 北京 100029;
    2. 中国科学院兰州地质研究所 兰州730000;
    3. 云南省腾冲县地震局 云南腾冲679100
  • 收稿日期:1998-09-30 修回日期:1999-01-31 出版日期:1999-12-08 发布日期:2009-11-25
  • 基金资助:
    国家地震局"九五"重点项目资助(95110204);中国地震局地质研究所论著99B0057.

ACTIVE TYPES OF MODERN GEOTHERMAL FLUIDS AT THE TENGCHONG REGION, YUNNAN PROVINCE

Shangguan Zhiguan1, Sun Mingliang2, Li Hengzhong3   

  1. 1. Institute of Geology, China Seismological Bureau, Beijing 100029;
    2. Lanzhou Institute of Geology, Chinese Academy of Science, Lanzhou 730000;
    3. Seismological Bureau of Tengchong County of Yunnan Province, Tengchong 679100
  • Received:1998-09-30 Revised:1999-01-31 Online:1999-12-08 Published:2009-11-25

摘要: 腾冲地区存在两类地热流体活动。其中热海-热水塘地区、马鞍山火山口附近的地热流体活动属火山区地热流体活动,其热源或气体挥发组分的物质来源与近代火山喷发活动或现代幔源岩浆侵入活动直接有关。区内其它地热流体活动多属构造活动成因。在腾冲地区,地热流体逸出He 的3He/4He≥1.2 Ra 可作为区别这两类地热流体的可靠指标。

关键词: 火山, 地热, 流体, 氦同位素地球化学

Abstract: In the Tengchong region, there exist two kinds of active geothermal fluids. Only those active geothermal fluids distributed at the Rehai Reshuitang and nearby areas of the Maan shan crater really deserve to be called the volcanic geothermal fluids. It means that their thermal source or the volatile components escaped from the geothermal fluid could be related to the modern volcanic activity or magmatic intrusion. Other geothermal fluids are all generally the thermal discharge caused by the tectonic activity. The 3He/4He≥1.2Ra could be the reliable indicator to distinguish these two fluids.

Key words: Volcano, Geotherm, Fluid, He isotopic geochemistry