滋賀県信楽地域の地質と粘土鉱床

概要

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The Shigaraki district, south of lake Biwa, is located at the southern part of Shiga prefecture. 'Shigaraki' is well-known as one of the six old kilns in Japan, where has a history since about 1,200 years ago. The present writers have carried out geological field survey and mineralogical study of the clays by using the technique of X-ray diffraction, electron-microscope and thermo-analysis. The lower part of the Pliocene sediments in the Shigaraki district, lower stratum of Paleo-Biwa group, is abundant in the commercial clays such as 'gaerome' clay, 'kibushi' clay and white clay (Shirae). They are considered as sediments in the present Shigaraki plateau in the northern part of the Iga tectonic basin. The irregularity of clay deposits and the variation of quality as raw clay material in the three sections of Sangoyama-Makiyama, Hosohara-Nakazato-Shimode and Kumoi were able to be considerably explained by the geological full survey.
社団法人日本セラミックス協会の論文
1973-12-01