통일신라시대 녹유전돌(綠釉塼)의 녹유 특성 - 부석사, 천룡사지 및 법광사지 녹유전돌 -

Analysis of Glaze on Brick, Green-Glazed Earthenware in Unified Silla Period

This article reports the results of scientific analysis, performing on five green glazed fragments(three for Buseoksa, one for Cheonryongsaji and one for Beopgwangsaji) on five bricks, green-glazed earthenwares produced in Unified Shilla period, to verify the manufacturing method and coloring agent. We also analyzed the lead isotope ratios to presume the provenance of raw material of lead using TIMS. Aa a result of analysis by SEM-EDS, major chemical composition of glazes was 25% SiO2 and 75% PbO on the average. Minor elements of coloring agents acted on glazes in sight of gray-yellow color were by MnO, Fe2O3 and CuO and for yellow and blue-green by Fe2O3 and CuO. Provenance study using lead isotope ratio analysis have shown that two samples of glazes found in Buseoksa were equal to lead isotope ratio. This means that two green-glazed brick found in Buseoksa have used the same as galena. Also, lead isotope ratio of bricks glazed green have included to galena of Southern Korea. Lead isotope ratios of thee samples(one sample of each Buseoksa, Cheonryongsaji, Beopgwangsaji) were classified as another group. This result suggested that these glazes have used the another galena not included to Korea, China and Japan elsewhere. This study can also apply to pottery, brick and tile, green-glazed. This article will offer the basic datum performing provenance study of raw material and manufacturing method of green-glazed.