[S-GL32] Lower-Middle Pleistocene Boundary GSSP in the Kazusa Group

Thu. May 24, 2018 3:30 PM - 5:00 PM A10 (Tokyo Bay Makuhari Hall)

convener:Makoto Okada(Department of Earth Sciences, Faculty of Science, Ibaraki University), Yusuke Suganuma(National institute of Polar Research), Koji Kameo(千葉大学理学研究科地球科学, 共同), Yoshimi Kubota(National Museum of Nature and Science), Chairperson:Haneda Yuki(茨城大学理工学研究科), Okada Makoto(Ibraki University)

In the Chiba Composite Section, a candidate for the Lower-Middle Pleistocene GSSP which is currently under review, a lot of stratigraphic studies using paleomagentism, marine microfossils, tephra layers and isotopes have been conducted intensively to propose GSSP. The aim of this session is to summarize and discuss scientific results from those studies including stratigraphic, chronologic and sedimentologic researches focusing on the Chiba Composite Section and/or some other contemporary sedimentary sequences.

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3:30 PM - 3:45 PM

[SGL32-01] A summary of the Chiba Section, Japan: a proposed Global Boundary Stratotype Section and Point (GSSP) for the base of the Middle Pleistocene Subseries

*Yusuke Suganuma¹, Members of proposed GSSP, Chiba section (1.National institute of Polar Research)

3:45 PM - 4:00 PM

[SGL32-02] A high-resolution biostratigraphy of calcareous nannofossils around the Matuyama-Brunhes boundary in the Kokumoto Formation, Kazusa Group, in the Boso Peninsula, central Japan

*Koji Kameo¹, Yuki Haneda², Yoshimi Kubota³, Yusuke Suganuma⁴, Makoto Okada⁵ (1.Department of Earth Sciences, Faculty of Science, Chiba University, 2.Graduate School of Science and Engineering, Ibaraki University, 3.National Museum of Nature and Science, 4.National institute of Polar Research, 5.Department of Earth Sciences, Faculty of Science, Ibaraki University)

4:00 PM - 4:15 PM

[SGL32-03] A high resolution paleomagnetic record across the Matuyama-Brunhes polarity transition from the Chiba composite section, a candidate for the L-M Pleistocene boundary GSSP

*Makoto Okada¹, Yuki Haneda², Yusuke Suganuma^3,4 (1.Department of Earth Sciences, Faculty of Science, Ibaraki University, 2.Graduate School of Science and Engineering, Ibaraki University, 3.National Institute of Polar Research, 4.The Graduate University for Advanced Studies)

4:15 PM - 4:30 PM

[SGL32-04] Ultra-high temporal resolution foraminiferal isotope records during MIS 19 from the Chiba composite section

*Yuki Haneda¹, Makoto Okada², Yoshimi Kubota³, Yusuke Suganuma⁴ (1.Graduate School of Science and Engineering, Ibaraki University, 2.College of Science, Ibaraki University, 3.National Museum of Nature and Science, 4.National institute of Polar Research)

4:30 PM - 4:45 PM

[SGL32-05] High-resolution climatostratigraphy for the MIS 19 interglacial from the Chiba Section

*Masayuki Hyodo¹ (1.Research Center for Inland Seas, Kobe University)

4:45 PM - 5:00 PM

[SGL32-06] Quantitative paleotemperature reconstruction covering the Early-Middle Pleistocene boundary (MIS18-20) based on the pollen record obtained from the Chiba composite section, SE Japan

*Masaaki Okuda¹, Misao Hongo², Masami Watanabe³, Manami Sugaya⁴, Yusuke Suganuma⁵, Makoto Okada⁶ (1.Natural History Museum and Institute, Chiba, 2.Alps Technical Research Laboratory, 3.Archaeological Research Consultant, Inc., 4.Giken Consul.,Ltd., 5.National Institute of Polar Research, 6.Department of Environmental Sciences, Ibaraki University)

Session information