Aspartic acid racemization analysis has suggested a date of 55-90 kyr BP for an elephantid tusk specimen deriving from a gravel-sand bed exposed at the Fujie Beach in the Akashi City; this bed is assigned to the lower part of the Nishiyagi Formation.
雑誌名
国立歴史民俗博物館研究報告
雑誌名(英)
Bulletin of the National Museum of Japanese History
15. 西八木層出土骨遺残のラセミ化年代（前篇 発掘調査の成果 / 第Ⅲ部 年代測定）
kenkyuhokoku_013_16.pdf
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