This handbook will assist those interpreting geological structures at map scale from surface to subsurface maps. The 3-D structure is defined by internally consistent structure contour maps and cross sections of all horizons and faults. This new edition includes fresh material, in particular numerous examples of 3-D models and techniques for using models to predict fault and ramp-anticline geometry. The book has also been reorganized to more closely follow the typical interpretation workflow. Text figures are produced in color to assist and to enable the reader to produce better geological maps and cross sections, judge the quality of existing maps, and locate and fix mapping errors. Students and professional geologists in structural geology, sedimentology, petroleum geology and engineering geology, will benefit from this updated edition.