Oil & Gas Geology ›› 1982, Vol. 3 ›› Issue (4): 379-387.doi: 10.11743/ogg19820419

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THE SUBDIVISION OF QUATERNARY AND ITS LOWER BOUNDARY IN BEIJING PLAIN

Li Dingrong1, Xie Zhenzhao1, Wang Ande1, Wang Huanzhen1, Liu Chingsi2, Yuan Guoxian3   

  1. 1. Seismo-Geological Team, State Bureau of Seismology;
    2. Geography Department of Beijing Teachers University;
    3. No.562 Team, Ministry of Geology and Mineral Resources
  • Received:1981-06-18 Online:1982-12-25 Published:2012-01-16

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Abstract:

In 1979,we suggested that pliocene-pleistocene boundary in Beijing plain,based on the results of seismological and geological research,may be placed between the Pliocene Shunyi Formation and the Pleistocene Xiadian Formation, deter about 2.43 m.y.B.P. Since then, we have studied more cores, measured their CaCO3 content and thermolumlnescene; Micratektltes from the Zhnili Formation,insecte fossils of Diptera from the Xiadan Formation of well No,l in Shunyi have also been discovered. These are sound evidurces for the subdivision of Quaternary and the determination of its lower boundary in this area.