Journal of Guangxi Normal University(Natural Science Edition) ›› 2017, Vol. 35 ›› Issue (1): 16-20.doi: 10.16088/j.issn.1001-6600.2017.01.003

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Determination of Exposure Age of Tiankeng, Leye County of Guangxi by Accelerator Mass Spectrometry

MENG Qi1,SHEN Hongtao1,MAO Liqiang1,LIANG Weigang1,ZHAO Zizhen1,LIANG Zhaoyan1, LAI Mingfeng1,HUANG Baojian2,LI Shizhuo3,HE Ming3,JIANG Shan3   

  1. 1. College of Physics and Technology,Guangxi Normal University,Guilin Guangxi 541004, China;
    2. Institute of Karst Geology,Chinese Academy of Geological Sciences,Guilin Guangxi 541004,China;
    3. China Institute of Atomic Energy,P.O. Box 27550) ,Beijing 102413, China
  • Online:2017-01-20 Published:2018-07-17

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Abstract: Accelerate mass spectrometry is a nuclide analysis technique with high sensitivity. In this paper, accelerator mass spectrometry is used to measure the content of radionuclide 36Cl in the rocks to study the exposure age of Dashiwei Tiankeng,Leye County of Guangxi, and realize the dating of Dashiwei Tiankeng in Guangxi. The results show that the exposure age of Dashiwei Tiankeng is at least 100-200 thousands years. The study intends to provide a significant reference value for the study of karst relief areas and its evolution.

Key words: Tiankeng, 36Cl, exposure age, erosion rate, AMS

CLC Number: 

  • O571.1
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