암석학회지 (The Journal of the Petrological Society of Korea)

한국암석학회 (The Petrological Society of Korea)
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논산 관촉사 석조미륵보살입상의 재질분석과 표면상태 변화 모니터링

Material Analysis and Surface Condition Monitoring of Standing Buddha Statue in the Gwanchoksa Temple, Nonsan, Korea

  • 이명성 (국립문화재연구소 보존과학연구실) ;
  • 최명주 (국립문화재연구소 보존과학연구실) ;
  • 유지현 (국립문화재연구소 보존과학연구실) ;
  • 안유빈 (국립문화재연구소 보존과학연구실)
  • Lee, Myeong Seong (Conservation Science Division, National Research Institute of Cultural Heritage) ;
  • Choie, Myoungju (Conservation Science Division, National Research Institute of Cultural Heritage) ;
  • Yoo, Ji Hyun (Conservation Science Division, National Research Institute of Cultural Heritage) ;
  • Ahn, Yu Bin (Conservation Science Division, National Research Institute of Cultural Heritage)
  • 투고 : 2019.10.29
  • 심사 : 2019.11.25
  • 발행 : 2019.12.31
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초록

논산 관촉사 석조미륵보살입상은 중립 내지 조립질의 흑운모 화강섬록암으로 구성되어 있으며 석불의 제작 시기 및 장소에 대해 고문헌에 반야산의 서북쪽에서 제작되어 동쪽으로 이동하였다는 기록이 있어 채석지가 명확하다. 또한 석불과 주변 기반암의 암상, 조직, 전암대자율 및 감마스펙트로미터 비교 결과, 모두 유사한 특성으로 보여 동일한 기원의 암석으로 판단된다. 이 석불에서 관찰되는 표면오염물에 의한 훼손은 환경적인 요인과 보수물질의 노후에 의한 복합적 요인이 발생하는 것이며, 2007년 제거작업 이후에도 점차 증가하는 경향을 보이므로 지속적인 모니터링이 필요할 것으로 판단된다. 조류의 경우 석조문화재의 표면에 생물학적 오염이 발생하는 경우 착생이 가장 빠르게 진행되며, 곰팡이와 공생체를 이루어 이차적으로 지의류의 착생 가능성이 있어 위치 및 분포 범위에 대한 변화 관찰이 요구된다. 또한 노후된 보수물질은 염의 정출에 따른 오염물 발생, 탈락으로 인한 결합력 저하 등으로 이차적인 훼손이 발생할 수 있으므로 적절한 보존관리를 통해 안정성을 확보하는 것이 바람직하다.

Medium to coarse-grained biotite granodiorite was used to build the Standing Buddha Statue in the Gwanchoksa temple. An ancient document revealed the period and place of constructing the statue: it was made in the northwest of Mt. Banyasan and then moved eastward. Also, the comparison of standing Buddha statue and basement rock in terms of texture, magnetic susceptibility, and gamma spectrometer shows that they have similar characteristics, which is considered to be the same provenance rock. The damage caused by surface contaminants observed in the statue seems to be a combined effect of environmental factors and aging of the epoxy resin. After removal of the contaminants in 2007, the contamination has resumed, and continuous monitoring is necessary. Algal engraftment becomes faster when biological contamination occurs on the surface of stone cultural heritage. Since the secondary lichen growth forms a symbiosis with mold, it is necessary to observe the spatial and distributional changes. Also, the aging epoxy resin may cause secondary damage due to contaminants generated due to the determination of salts, and deterioration of bonding strength due to breaking out. Thus it is desirable to secure stability through proper conservation management.

키워드

참고문헌

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