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Analysis and Tree-Ring Dating of Wooden Coffins Excavated from Incheon Sipjeong-Dong Site

인천 십정동 유적 내 출토 목관의 연륜연대 및 재질분석

  • LEE, Kwang Hee (Research Institute of Wooden Cultural Heritage, Korea National University of Cultural Heritage) ;
  • LEE, Ui Cheon (Department of Heritage Conservation and Restoration, Graduate School of Cultural Heritage, Korea National University of Cultural Heritage) ;
  • KANG, Pyung Won (Hangang Institute of Cultural Heritage) ;
  • KIM, Soo Chul (Department of Conservation Science, Korea National University of Cultural Heritage)
  • Received : 2020.10.27
  • Accepted : 2021.01.06
  • Published : 2021.01.25

Abstract

This study aimed to conduct tree-ring dating and analysis of the materials used for the wooden coffins excavated from the ruins of Sipjeong-dong, Incheon. The tree species for the 10 wooden coffin materials was identified as pine. For accurate tree-ring measurement, the cross section was polished using sandpaper. The annual ring width was measured with an accuracy of 0.01 mm. Since the five materials were consistent with each other in dendrochronology, a representative annual ring chronology of 83 years was prepared. The prepared representative annual ring chronology was compared with the standard annual ring chronology, and the outermost ring of the wooden coffin was confirmed to correspond to the year 1575, suggesting that the wooden coffin was produced in the late 16th century. In addition, microscopic observation and FT-IR analysis revealed that the fibers attached to the surface of the wooden coffin were fibroin (Silk), and infrared spectroscopy (FT-IR) and Py-GC/MS analysis showed that the paint left on the surface of the wooden coffin was lacquer.

본 연구에서는 인천 십정동 유적에서 출토된 목관(1호 회곽묘)에 대해 연륜연대와 사용된 재료를 확인하고자 진행하였다. 목관부재 10점에 대한 수종은 모두 소나무류로 확인되었다. 정확한 연륜측정을 위해 사포를 이용하여 횡단면을 연마하였다. 연륜폭은 이용하여 0.01 mm 정확도로 측정하였다. 5점의 부재들은 서로 간에 일치하였기 때문에 83년간의 대표연륜연대기가 작성되었다. 작성된 대표연륜연대기는 표준연륜연대기들과 비교를 통해 목관의 최외각 연륜은 1575년으로 확인되었고, 16세기 후반에 목관이 제작된 것으로 판단하였다. 또한 목관 표면에 부착된 섬유에 대해 현미경관찰 및 FT-IR분석을 통해 견섬유가 사용된 것을 확인할 수 있었으며, 목관 표면에 칠해져 있던 칠은 FT-IR, Py-GC/MS 분석으로 옻칠임을 확인할 수 있었다.

Keywords

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