1. Introduction and Historical Background2. Geomorphic Expression and Seafloor Paleoseismology3. Subseafloor Geology of the San Clemente Fault System4. Crustal and Lithospheric Structure from Gravity and Magnetic Studies5. Seismicity and Earthquake Potential6. Oblique-Rifting of the Inner Borderland - Tectonic Evolution of the San Diego Trough (Half-Graben) and the San Clemente Basin (Rhombochasm)7. Transpressional Ridges and Basin Inversion