埼玉県南平野の地盤地質

概要

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The southern plain of Saitama Prefecture is divided by Arakawa and Nakagawa lowlands into three eminences, Iruma, Kitaadachi and Noda, from west to east. Beside these two lowlands, Kawaguchi lowland extends south of Kitaadachi eminence. These eminences are consisted of diluvium in descending order as follows: Loam………………………mainly consists of volcanic ash, 4-5m in thickness Light colored bed……mainly consists of tuffaceous clay and sand, 10m in thickness First graval bed……mainly consists of gravel, often changing into sand, 5m in thickness Upper dark colored bed……mainly consists of clay, often intercalating thin bedded sand, 20m in thickness Second gravel bed……mainly consists of gravel, often changing into sand, 10m in thicknes Lower dark colored bed……mainly consists of clay and sand, about 10 - 20m in thickness The low lands are composed of allvuium in descending order as follows: Upper clay bed ……………mainly consists of silt and clay, often intercalating peat, 1-2m in thickness Upper sand bed ……………mainly consists of fine sand and clayey sand, 2-3m in thickness Lower clay bed ……………mainly consists of sand, rarely changing into gravel, about 1m in thickness Of these strata, soft beds are Loam, Upper dark colored bed of diluvium, and alluvium of lowlands; hard beds are First, Second and Third gravel beds and Lower dark colored bed.
一般社団法人日本応用地質学会の論文
1962-12-31