Details

Autor(en) / Beteiligte

• KOMTSUBARA, Taku
• HONGO, Misao
• FURUSAWA, Akira

Titel

An Aggradation Terrace Emerged in the Marine Isotope Stage 3 along the Hinokinai River, North of the Yokote Basin, Northeastern Honshu

Ist Teil von

• Quarterly Journal of Geography, 2022, Vol.73(4), pp.233-249

Ort / Verlag

Sendai: The Tohoku Geographical Association

Erscheinungsjahr

2022

Link zum Volltext

Quelle

Electronic Journals Library - Freely accessible e-journals

Beschreibungen/Notizen

• A distinctive fill top terrace accompanying with thick deposits develops along the Hinokinai River which flows in hills and mountains in north of the Yokote basin, northeastern Honshu island.　The authors analyzed tephra-origin materials in the tephric loess overlying on this terrace and pollen assemblages in the terrace deposits.　The results are followings:1） Pollen assemblages showed that paleovegetation was conifer-riched and deciduous broadleaved mixed forest without Fagus during the depositional period of fill top terrace. 2） Tephric loess analyses showed that this terrace emerged just before the falling of the To-Of tephra （ca. 36 cal ky BP）.　These indicates that the aggradation terrace had formed since the MIS 3 when it’s climate had been little cooler and less precipitation than the Holocene.