Fig. 5.
From: Imaging of subsurface lineaments in the southwestern part of the Thrace Basin from gravity data
Lineament map of the southwestern part of the Thrace Basin (Turkey) obtained from the Hough transform algorithm. The automatically-extracted surface lineaments (dashed line) and subsurface lineaments (solid line) from upward continuation of the Bouguer gravity data to 5 km are superimposed on the Bouguer anomaly map of the study area shown in Fig. 4. GRH and GRL denote the maximum and minimum gravity regions, respectively. SL: the lineaments retrieved from the Bouger anomaly map, SSL: the lineaments estimated from the upward continuation map, ML: the shallow and deep lineaments that are merged manually combining the SL and SSL. Coordinates are in kilometers and degrees.