摘要：500 Ω m) that corresponds to Mesozoic sediment, and (3) shallow and deep two highly conductive zones (30–40 Ω m) along the fault.The shallow conductive zone is a common feature of the Yamasaki fault system, whereas the deep conductor is a newly discovered feature at depths of 800–1,800 m to the southwest of the fault.The conductor is truncated by the Hijima fault to the northeast, and its upper boundary is the resistive zone.Both conductors are interpreted to represent a combination of clay minerals and a fluid network within a fault-related fracture zone.In terms of the development of the fluid networks, the fault core of the Hijima fault and the highly resistive zone may play important roles as barriers to fluid flow on the northeast and upper sides of the conductive zones, respectively.
关键词：Hijima fault ;Yamasaki fault system ;audio-frequency magnetotelluric ;conductivity structure
