자원환경지질 (Economic and Environmental Geology)

  • 제54권3호
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  • Pages.311-330
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  • 2021
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  • 1225-7281(pISSN)
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  • 2288-7962(eISSN)
대한자원환경지질학회 (The Korean Society of Economic and Environmental Geology)
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보존방안 수립을 위한 청송 신성리 공룡발자국 화석지의 손상도 진단 및 물성평가

Deterioration Diagnosis and Evaluation of Physical Properties in the Dinosaur Footprint Fossils in Cheongsong Sinseongri, Korea, for the Conservation Plans

  • 양혜리 (공주대학교 문화재보존과학과) ;
  • 이찬희 (공주대학교 문화재보존과학과) ;
  • 박준형 (공주대학교 문화재보존과학과)
  • Yang, Hye Ri (Department of Cultural Heritage Conservation Sciences, Kongju National University) ;
  • Lee, Chan Hee (Department of Cultural Heritage Conservation Sciences, Kongju National University) ;
  • Park, Jun Hyoung (Department of Cultural Heritage Conservation Sciences, Kongju National University)
  • 투고 : 2021.05.03
  • 심사 : 2021.05.19
  • 발행 : 2021.06.28
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초록

청송 신성리 공룡발자국 화석지에는 최소한 수각류 보행렬 11개, 용각류 보행렬 3개 및 조각류 보행렬 1개 이상 존재하여, 국내 다른 공룡발자국 화석지에 비해 수각류 보행렬의 밀집도가 높다. 공룡발자국의 모암은 미사암과 이암의 암상을 보이나 전체적으로 열변질을 받아 혼펠스화되어 있다. 이 화석지의 표면에는 다양한 방향의 절리가 나타나며 미세균열과 박락을 제외하면 모든 손상요인에서 낮은 점유율을 보였다. 초음파 속도 측정 결과, 화석지의 암석은 비교적 건전한 물성을 보여 안정적인 것으로 평가되었다. 공룡발자국 화석의 손상형태에 따라 보존처리 유형을 세분하면, 균열의 진전을 제어할 수 있는 강화처리가 필요한 발자국화석이 절반 이상의 비율을 보였다. 또한 발자국의 가시화를 위해 도포한 흰색 페인트가 열화되면서 암편 탈락을 유발하여 오히려 화석의 손상을 촉진하는 것으로 나타나, 이를 대체할 방안이 검토되어야 할 것이다.

The Sinseongri site contains at least eleven theropod trackways, three sauropod trackways, and one or more ornithopod walkways of dinosaur footprints. The host rock at the site is primarily siltstone and mudstone, but thermal alterations have metamorphosed it into hornfels. Except for micro cracks and exfoliations, joint systems in various directions appeared on the surface of the fossils site and showed a low share of all damage factors. The host rocks in the fossils site demonstrated relatively high physical properties as a result of ultrasonic velocity and were classified as stable. More than half of the fossils required reinforcement to control the progression of cracks if the type of conservation treatment was subdivided according to the damage type of dinosaur footprint fossils. The white paint used to visualize the footprints seems to deteriorate, allowing rock debris to spill out and causing damage to the fossil site, and alternative visualization schemes should be considered.

키워드

과제정보

이 결과는 2020년 경상북도 청송군의 지원을 받아 수행한 연구의 일부임을 명기하며 이에 깊은 사의를 표한다. 또한 원활한 조사와 연구가 가능하도록 지원해 주신 청송군 관광정책과 주성옥 학예연구사께도 깊이 감사드린다.

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