東京低地付近の沖積層を例とした沖積層研究の新展開(<特集>最新の地質学-地盤工学との関わり-)

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This paper reviews recent progress of the geological study of So-called Chuseki-so, mainly based on scientific results of the Urban Geology Research Project of Geological Survey of Japan, AIST. The Chuseki-so was examined by an integration of high-resolution core analysis including C^<14> dating, the sequence stratigraphic analysis, and the methods for constructing 3-D model using borehole database. As a result, it has been characterized by an incisedvalley filled sequence controlled by the latest Pleistocene to Holocene sea-level change. Then the depositional system and physical properties have been well visualized by the spatial distribution of the N values and lithofacies. Such study will greatly contribute to research in the geotechnical engineering field.
2009-02-01