This book focuses on the characterization of fault damage zones and subsurface structure systems quantitatively for the first time. It provides a comprehensive case study of various types of fault damage zones, including normal, reverse, strike-slip, and composite zones. The book also explores fractures within fault damage zones and the effect of faulting on cap rock integrity. Through meticulous case studies and analyses from diverse geographical regions, this book elucidates the seismic characteristics and behaviors associated with fault damage zones. Readers will find particular interest in the methods and results presented in the book, as it offers a holistic and systematic approach to understanding and building seismic geostructures. Incorporating seismic attributes and coherence analysis, as well as applying neural networks, it provides readers with innovative techniques in fault characterization and segmentation. Besides, this book incorporates illustrative visuals, insightful tables, and cutting-edge seismic attributes, which enhance the reader's understanding of the subject matter. Researchers, professionals, and students in petroleum geology, geophysics, and engineering will find this book to be an invaluable resource with the practical insights and innovative methodologies it offers for the state-of-the-art characterizing and analyzing fault damage zones.