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| | Abstract | | Seismic reflection surveys were conducted in the coastal area of the Kujukuri plain, Chiba Prefecture. Reflectors near the bottom of the alluvial sediment are flat in a seismic section of Kujukuri town, but they are neither flat nor smooth and have concaves in seismic sections of Yokoshibahikari town and Asahi city. Bellow the alluvial sediment, reflectors are discontinuous and do not have specific dips in seismic sections of Kujukuri town and Yokoshibahikari town. On the contrary, reflectors are very continuous, show conformity and parallel bedding in Asahi city. The deeper are the sediment layers, the larger are their dips and thickness. The top of pre-Neogene basement is very clear and dips southwestward. High angle faults are interpreted in seismic sections of the three lines, especially they are remarkable in Asahi city. |
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