短報
下北半島北部に分布する正津川軽石流堆積物のジルコン・フィッション・トラック年代
2006 年 112 巻 4 号 p. 294-297
詳細
2006 年 112 巻 4 号 p. 294-297
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.
