Late Holocene Change of Depositional Areas in the Nobi Plain Deduced from the Locations and Ages of Archaeological Sites

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Evolution of the Uppermost Alluvium in the Tokyo and Nakagawa Lowlands, Kanto Plain, central Japan: response to the "Yayoi regression"

晋

与四郎

2013

Jour. Geol. Soc. Japan

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The age and depth of the Uppermost Alluvium in the coastal lowlands of Japan indicates that minor sea-level drop, termed the Yayoi regression , occurred at-ka; however, this Yayoi regression is not a eustatic phenomenon. Sedimentary facies analysis and radiocarbon dating in the Tokyo and Nakagawa Lowlands indicate that: () flood plain sediments of the Uppermost Alluvium are located at depths > m below the present sea level, and () the morphology of fluvial channel sediments of the Uppermost Alluvium changes from sheet-like (-m below present sea level, deposited at-ka) to anastomosing (< m below present sea level, deposited at-ka). Sheet-like and anastomosing sand bodies typically form during lowstand and transgressive fluvial systems, respectively. This suggests that relative sea level was lower than the present at-ka, before rising in the Tokyo and Nakagawa Lowlands to current levels between ka and the present day.

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Late Holocene Change of Depositional Areas in the Nobi Plain Deduced from the Locations and Ages of Archaeological Sites

Cited by 4 publications

References 5 publications

Changes in shell gathering in an early agricultural society at the head of Ise Bay, Japan

Changes in shell gathering in an early agricultural society at the head of Ise Bay, Japan

Late Holocene Landform Development and Change of Depositional Areas of Fluvial Sediment in the Central Echigo Plain, Central Japan

Evolution of the Uppermost Alluvium in the Tokyo and Nakagawa Lowlands, Kanto Plain, central Japan: response to the "Yayoi regression"

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