Fig. 1. Gravity survey data distribution.
Fig. 2. Network adjustment error (left) and points to be verified in the future (right).
Fig. 3. Distribution of granitoids (left), Bouguer anomaly (middle) and isostatic anomaly (right): Tectonic zoning and classification of granitoids are referrred to Chough et al. (2000).
Fig. 4. Comparison of isostatic anomaly maps and their data distribution: map by Shin et al. (2006) (left), isostatic anomaly map from the Bouguer anomaly map of KIGAM (2014) (middle), and map of this study (right).