Bouguer gravity
Bouger gravity overlain with structural contours of Precambrian map from Cole (1976). Blues represent lowest residuals and reds represent highest residual values displayed with apparent relief created by vertical illumination. Steeper gradients are indicated by darker shading. (after Kruger, 1997) http://www.kgs.ku.edu/DPA/Plays/Grav/ksGravCole.html