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For the construction of the Bypass of the national road, Route 3, running through Kitakyushu City, underground of the projected route was investigated by means of drilling and other ways. I was fortun...ate in having a chance to study in detail a lot of boring cores obtained and the subsurface geology of the Kokura alluvial Plain covered with thick Quaternary deposits. The results obtained are illustrated in Figs.6 and 7, and are summarized as follows: 1) The Tertiary sediments developed under the greater part of the Kokura alluvial plain may be subdivided into three formations: the Yamaga, the Onga and the Ideyama Formation, which may be correlated respectively to the equivalents in the Chikuho Coal-field. 2) The critical relationship between the Onga and the Ideyama formations could not be ascertained because both formations in this area are in contact with each other with the resulting fault named the Usa-machi Fault, and a boring was just downed through this fault. 3) Geological structure of the Tertiary System shown in Fig.6 might be identified to the "Chikuho Geostructural type" denominated by H. MATSUSHITA (1951).続きを見る
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Mendeley出力
20_01_p001