[M-ZZ43] Transdisciplinary Network linking Space-Earth Environmental Science with History and Archaeology

[MZZ43-P02] Single-ring AMS-¹⁴C dating of the root joint of Japanese cypress of Mieido, Senju-ji Temple, Mie.

*Minoru Sakamoto^1,5, Masataka Hakozaki¹, Misao Yokoyama³, Fuyuki Tokanai², Takumi Mitsutani⁴ (1.National Museum of Japanese History, 2.Yamagata University, 3.Kyoto University, 4.Nara National Research Institute for Cultural Properties , 5.The Graduate University for Advanced Studies)

Keywords:radiocarbon age, calibration curve, single tree-ring, regional effect

Senshu-ji Temple in Tsu City, Mie Prefecture, burned down in 1645, and the Miedo Hall was rebuilt in 1666. Following conservation and repair work completed in 2007, the Miedo Hall was designated a national treasure in 2017 along with the Nyorai Hall.
During the repair work, a Japanese cypress root joint was obtained from part of the Miedo Hall's pillar, which was located under the floor. It is a core material with a diameter of about 80 cm, including sapwood. Dating using the ¹⁴C wiggle-matching has given a consistent result of calibrating the standard tree-ring layer (1234 AD) to 1227-1242 AD (94.9%). This cypress wood has over 300 layers of tree rings, making it suitable for understanding the behavior of ¹⁴C concentrations from the 12th to 15th centuries based on tree rings from Japan. Single-ring AMS-¹⁴C dating is currently underway.