STRATI 2013 pp 257-260 | Cite as

A Potential Lower–Middle Pleistocene GSSP with Excellent Magnetostratigraphy Along the West Pacific Margin: The Chiba Section, Central Japan

  • Osamu KazaokaEmail author
  • Hisashi Nirei
  • Nobuyuki Aida
  • Hisao Kumai
  • Martin J. Head
  • Brad Pillans
Conference paper
Part of the Springer Geology book series (SPRINGERGEOL)


The Chiba section in Japan represents a potential global boundary stratotype section and point (GSSP) for the Lower–Middle Pleistocene Subseries/Subepoch. The proposed GSSP is placed at the base of the Byakubi ash bed, a regional marker directly correlated to the Matuyama–Brunhes magnetic reversal, which is the primary guide for the Lower–Middle Pleistocene boundary. The Byakubi ash bed occurs within the 2000-m-thick Kazusa Group, which was deposited in bathyal to shelf palaeoenvironments during the Early and Middle Pleistocene. In addition to the numerous marine stratigraphies already studied, this section offers potential correlation to Chinese loess stratigraphy.


Lower–Middle Pleistocene GSSP Chiba section Byakubi ash Matuyama–Brunhes magnetic reversal 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Osamu Kazaoka
    • 1
    Email author
  • Hisashi Nirei
    • 2
  • Nobuyuki Aida
    • 3
  • Hisao Kumai
    • 4
  • Martin J. Head
    • 5
  • Brad Pillans
    • 6
  1. 1.Research Institute of Environmental GeologyMihama-ku, ChibaJapan
  2. 2.KatoriJapan
  3. 3.Omigawa Senior High SchoolKatoriJapan
  4. 4.Osaka City UniversityOsakaJapan
  5. 5.Department of Earth SciencesBrock UniversitySt. CatharinesCanada
  6. 6.Research School of Earth SciencesThe Australian National UniversityCanberraAustralia

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