Fig. 4From: Continuity of subsurface fault structure revealed by gravity anomaly: the eastern boundary fault zone of the Niigata plain, central JapanBouguer anomaly map around the Niigata plain. A density of 2670 kg/m3 is used for the calculation of the Bouguer anomalies. A contour interval is 2 mGal. Lines are the same as those in Fig. 1 Back to article page