Estimation method of uplift during late Quaternary in an inland area; Case study of fluvial terraces along the Kaburagawa river and Tokigawa river

Yasue, Kenichi; Tajikara, Masayoshi*; Tanikawa, Shinichi; Sugai, Toshihiko; Yamada, Koji*; Umeda, Koji

We attempt to improve the reliability of the TT method, quantitative estimation of inland uplift rate based on the model in which river bed elevation is controlled by the climate change. In order to recognize fluvial terraces in the glacial epoch, it is important to note that flood deposit and phytolith as indicators of the determination of the emergence horizon and the estimate of the paleoclimate, respectively. The identification of thick sediments suggesting the decline of the tractive force in the glacial epoch are also useful for highly accurate comparison and chronology of the terrace. This paper shows that the synthetic examination based on many data obtained by these techniques enables a highly accurate comparison and chronology of the terrace to estimate uplift for the last 100,000 years with high reliability.