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

Thu. May 24, 2018 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall7, Makuhari Messe)

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)

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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[SGL32-P01] An integrated chronostratigraphy in the lower Pleistocene Obama Formation, Inubo Group, distributed in the Choshi district, Chiba Prefecture, central Japan, based on data from paleomagnetic and oxygen isotopic analyses

*Keisuke Yamamoto¹, Hiroyuki Inomata¹, Makoto Okada¹ (1.Ibaraki University)

[SGL32-P02] Tephrostratigraphy of the Kokumoto Formation, Kazusa Group in the Yoro river route

*Hiroomi Nakazato¹, Yasufumi Satoguchi², Yoshihiro Takeshita³, Makoto Okada⁴ (1.National Agriculture and Food Research Organization, 2.Lake Biwa Museum, 3.Institute of Education, Shinshu University, 4.Department of Earth Sciences, Ibaraki University)

[SGL32-P03] Planktonic foraminiferal faunal changes around the Matuyama–Brunhes boundary in the northwestern Pacific and its paleoceanographic implications

Kizuku Shikoku¹, *Hiroki Hayashi¹, Minoru Ikehara² (1.Interdisciplinary Faculty of Science and Engineering, Shimane University, 2.Center for Advanced Marine Core Research, Kochi University)

[SGL32-P04] Radiolarian fossils from the Kokumoto Formation

*Takuya Itaki¹, Yuki Haneda², Yoshimi Kubota³, Yusuke Suganuma⁴, Makoto Okada⁵ (1.Geological Survey of Japan, AIST, 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)

Session information