Radiographs from the GS-SK-1A core, which was drilled at a central part of the Nakagawa Lowland (quoted from Ishihara et al., 2004; in this issues)
@gChuseki-soh, which is an incised-valley fill deposited since the last glacial maximum, is distributed under the Nakagawa Lowland, Saitama Prefecture, central Japan. ThegChuseki-sohis in general composed of fluvial to shallow marine sediments, indicating a set of transgression and regression. The photographs of the top page are radiographs of agChuseki-sohcore showing sedimentary features such as cross bedding and ripple lamina, burrow-like structure, and small molluskan fossils. Length of cores : 28 cm long.