Feldspar OSL dating of MIS 5e marine terrace deposits; Case study in the Kii Peninsula

Ogata, Manabu ; Komatsu, Tetsuya  ; Nakanishi, Toshimichi*

Marine terraces are formed by regional uplift and sea level change, being useful for estimating uplift rates on geomorphological time scale (10-10 years). However, the emergent ages, and then the uplift rates, are difficult to determine when the sediments include few organic materials and tephra. Optically stimulated luminescence (OSL) dating method on feldspar is useful to date sediments on 10-10-year timescales. Thus, this method has been applied to date marine terrace deposits in the last several years. In this presentation, we will present the case study for MIS 5e marine terraces in the Kii Peninsula, for which the depositional ages were estimated by using feldspar OSL dating.