Journal of Conservation Science (보존과학회지)

The Korean Society Of Conservation Science For Cultural Heritage (한국문화재보존과학회)
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Physicochemical and Archaeometric Characteristics of Goryeo Period Potteries from the Sandongri in Seosan, Korea

서산 산동리 고려시대 도기의 물리화학적 및 고고과학적 특성

  • Lee, Chan Hee (Department of Cultural Heritage Conservation Science, Kongju National University) ;
  • Jin, Hong Ju (Department of Cultural Heritage Conservation Science, Kongju National University)
  • 이찬희 (공주대학교 문화재보존과학과) ;
  • 진홍주 (공주대학교 문화재보존과학과)
  • Received : 2016.04.06
  • Accepted : 2016.06.11
  • Published : 2016.06.20
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Abstract

The excavated potteries of Goryeo Period from the Sandongri archaeological site in Seosan were studied on physicochemical analyses. Surface color of the samples are mainly grayish blue, and showed the natural glaze by melting the body soils during the burning. Partly, swelling surface are observed bloated marks because of blow out gas by burning. The potteries are some possibility of making the similar source clay on the basis of magnetic susceptibilities (about $1{\times}10^{-3}SI\;unit$) and general occurrences. Values of specific gravity, apparent porosity and absorption ratio are divided two groups as highly different cases of bloating surface samples. The source clay of the potteries used mainly microcrystalline clay, the mineral compositions are quartz and some colored minerals. Based on the analysis, the burning temperature of the potteries are assumed that they were around $1,100^{\circ}C$ because detection of quartz and mullite within hard and compact matrices. As geochemical variations of the samples, evolution trends of rare earth, compatible and incompatible elements showed very similar patterns excepting the some major elements, that means the potteries are interpreted to making by elutriation processes using the same raw clays from very similar basement rocks of genetically.

서산 산동리 출토 고려시대 도기를 대상으로 물리화학적 및 고고과학적 특성을 분석하였다. 도기의 표면색은 주로 회청색을 보이나, 바탕흙이 용융된 것으로 보이는 자연유가 나타나며, 부분적으로 소성과정에서 가스가 방출되어 생긴 부푼 흔적이 관찰된다. 대부분 시료에서 $1({\times}10^{-3}SI\;unit)$ 이하의 전암대자율 값을 갖는 것과 전체적인 산출상태 등으로 보아 유사한 태토로 제작하였을 가능성이 있다. 도기의 비중, 공극률 및 흡수율은 크게 두 그룹으로 구분되며 부푼 흔적이 있는 시료에서 차이를 보인다. 태토는 점토를 사용하였으며, 석영이 관찰되고 일부 시료에서는 유색광물이 확인된다. 분석 결과를 종합할 때, 도기는 견고하고 치밀한 기질에 석영과 뮬라이트가 공통적으로 검출되는 것을 보아 $1,100^{\circ}C$ 내외에서 소성되었을 것으로 판단된다. 도기과 번조받침의 지구화학적 거동특성을 살펴보면, 주성분원소에서 약간의 차이는 있지만 희토류, 호정 및 불호정원소가 상당히 유사한 패턴을 보인다. 따라서 도기제작은 동일 종류의 기반암에서 거의 동일한 진화경로를 거친 성인적으로 유사한 태토를 사용하였으며 정선과정을 거쳐 만든 것으로 해석된다.

Keywords

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