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Deterioration Evaluation and Petrological Characteristics of the Rock‐carved Seated Buddha of Hwasun Unju Temple, Korea

화순 운주사 마애여래좌상의 암석학적 특성 및 손상도 평가

  • Lee, Jang Jon (Conservation Science Division, National Research Institute of Cultural Heritage) ;
  • Kim, Jae Hwan (X-ray Lab, Center for Research Facilities, Chosun University) ;
  • Lee, Su Yea (Conservation Institute of Buddhist Temple Cultural Heritage)
  • 이장존 (국립문화재연구소 보존과학연구실) ;
  • 김재환 (조선대학교 장비운영센터 X-선분석실) ;
  • 이수예 ((사)사찰문화재보존연구소)
  • Received : 2016.10.17
  • Accepted : 2017.02.10
  • Published : 2017.02.20

Abstract

The rock-carved seated Buddha of Unju temple of Hwasun, Jeonnam, the only Triad Buddha among the stone Buddhas of Unju temple, is currently designated as a tangible cultural property No. 275 of Jeollanam-do. The rock of the seated Triad Buddha bedrock is light-green andesitic tuff breccia that is composed of quartz and feldspar. The results of measurement of the whole rock magnetic susceptibility characteristics, the rock consists of a single sedimentary layer from top to bottom. The results of ultrasonic velocity measurement, show that the number of frequency of 1500~2000 m/s increased and the number of frequency of 2000~2500 m/s decreased in 2009 compared to 2015, and the measurement value for 2000 m/s or below was 87.5% in 2015, a 68.8% increase in comparison to that in 2009. Moreover, on the top, bottom, left side, and head areas of the Triad Buddha, a partial expanding tendency was observed in the range of low ultrasonic velocity. As weathering of the Triad Buddha occurs in the long term, on-going monitoring is required to ascertain the degree of change with time.

Acknowledgement

Grant : 문화유산융복합연구(R&D)

Supported by : 국립문화재연구소

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