Fig. 4From: Distribution of surface heat flow and effects on the subsurface temperatures in the northern part of Thrace Basin, NW TurkeyCalculated heat flow values and a contour map showing the general variations of the surface heat flow in the Northern Thrace Basin. The mean of the residuals between calculated and interpolated heat flow values is 4.7 mW/m2. Heat flow determinations from two equilibrium T–D data are given in boldBack to article page