Japan Geoscience Union Meeting 2023

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[J] Online Poster

H (Human Geosciences ) » H-QR Quaternary research

[H-QR03] Quaternary, Diachronic dynamics of human-environment interactions

Sun. May 21, 2023 1:45 PM - 3:15 PM Online Poster Zoom Room (5) (Online Poster)

convener:Kazuyoshi Yamada(School of Human Sciences, Waseda University), Kazuaki Hori(Department of Earth Science, Graduate School of Science, Tohoku University), Toru Tamura(Institute of Geology and Geoinformation Geological Survey of Japan, AIST), Atsushi Urabe(Research Institute for Natural Hazards and Disaster Recovery, Niigata University)


On-site poster schedule(2023/5/21 17:15-18:45)

1:45 PM - 3:15 PM

[HQR03-P06] Stratigraphy and chronology of Holocene incised-valley fills in the southeast Shikoku Island, southwest Japan

*Takeyuki Ueki1 (1.Faculty of Education an Human Sciences, Teikyo University of Science)

Keywords:Muroto Peninsula, Holocene incised-valley fill, stratigraphy, chronology, non-marine deposits, sediment supply

The Holocene incised-valley fills in the Muroto Peninsula, southeast shikoku Island, southwest Japan are composed of non-marine deposits, influenced intensely by high sediment supply from a river than transgression. In the Nahari Lowland, 14C ages of basal gravels indicates an amalgamation of MIS 3 to 2 gravels. In the Murotsu Lowland, incised-valley fills predate to the Holocene sea-level maximum, influenced intensely by seismic-uplifting than transgression. Stratigraphy and chronology of the Holocene incised-valley fills in the Muroto Peninsula are incomparable with those in the Kanto Plain.