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The granites in the Gyeongju area are represented by the Namsan granites and the Tohamsan granodiorites. In this study I examined the geomorphological and geological characteristics of the granite landforms in the Gyeongju area. Joint, tor and corestones are most identifiable geomorphological and ge...

The granites in the Gyeongju area are represented by the Namsan granites and the Tohamsan granodiorites. In this study I examined the geomorphological and geological characteristics of the granite landforms in the Gyeongju area. Joint, tor and corestones are most identifiable geomorphological and geological structure in the study areas. Tor in the Namsan granites is well developed and mainly composed of cubic corestones. Petrographical features of the stones used for the stone-built cultural properties are compared with those of the granites cropped out nearby. Additionally radiogenic element contents (K, Th, U) were acquired for comparison by gamma-ray spectrometer analysis. Most stones from the stone-built cultural properties in the Bulguksa Temple are very similar to the Namsan granites in terms of petrography, radiogenic elements. On the contrary almost all stones from the Seokguram Grotto share common petrographical, physical and chemical characteristics with the Tohamsan granodiorites. Therefore it can be suggested that the stones in the Bulguksa Temple were supplied from Namsan, and that the stones in the Seokgurarn Grotto were collected at nearby Tohamsan.

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