阿武隈山地北東緑・塩手山付近の活断層

概要

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To the east of the Abukuma Mountains, left lateral displacements are noticeable on the active NNW-SSE faults with nearly vertical dip along the western margin and eastern part of the Futaba Shear Zone. Offset streams and shutter ridges are clearly formed along the western fault. Ridges in the shear zone bend northeastward and are dislocated sinistrally on the faults. The total amount of left lateral displacement on the shear zone is estimated to be over 500m through Quaternary. An upheaval is also recognized at the west of the shear zone from the deformation of terraces along the Mano and Uda rivers.
東北地理学会の論文