抄録
Fission-track age of zircon crystals was obtained as 0.18±0.04 (2σ) Ma for the pyroclastic-flow deposit (Shotsugawa pfl) of Tanabu C tephra in the northern Shimokita Peninsula. The Tanabu C tephra lies as a stratigraphic marker between the marine terrace succession, with the constant uplift-based chronology of which the new dating result can match.
