Auxiliary material for Paper 2007JB005113 Seismic structure of the southern Gulf of California from Los Cabos block to the East Pacific Rise Pedro Paramo Department of Geology and Geophysics, University of Wyoming, Laramie, Wyoming, USA Now at BP Exploration Operating Company Ltd., Sunbury-on-Thames, UK W. Holbrook and Hillary Brown Department of Geology and Geophysics, University of Wyoming, Laramie, Wyoming, USA Daniel Lizarralde Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA John M. Fletcher Department of Geology, Centro de Investigacion Cientifica y de Educacion Superior de Ensenada, Ensenada, Baja California, Mexico Paul Umhoefer Department of Geology, Northern Arizona University, Flagstaff, Arizona, USA Graham Kent and Alistair Harding Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California, USA Antonio Gonzalez-Fernandez Department of Geology, Centro de Investigacion Cientifica y de Educacion Superior de Ensenada, Ensenada, Baja California, Mexico Gary Axen Department of Earth and Environmental Science, New Mexico Institute of Mining and Technology, Socorro, New Mexico, USA Paramo, P., W. S. Holbrook, H. E. Brown, D. Lizarralde, J. Fletcher, P. Umhoefer, G. Kent, A. Harding, A. Gonzalez, and G. Axen (2007), Seismic structure of the southern Gulf of California from Los Cabos block to the East Pacific Rise, J. Geophys. Res., 112, B03307, doi:10.1029/2007JB005113. Introduction The auxiliary material shows the record sections analyzed for creating the velocity model. For each instrument a filtered record section, travel-time arrivals of individual seismic phases and ray tracing are shown. For all instruments the different seismic phases are named as follows: upper crust refraction (Puc), reflection from the top of lower crust (PlcP), lower crust refraction (Plc), Moho reflection (PmP), and upper mantle refraction (Pn). 1. 2007jb005113-fs01.jpg Figure S1: Top panel shows the processed record section with reduction velocity of 7 km/s for Reftek 6. The second panel shows the same processed record section overlain with calculated travel time arrivals from the final velocity model. The third panel corresponds to the ray tracing for the different phases for Reftek 6. The bottom three panels correspond to instrument Reftek 5. 2. 2007jb005113-fs02.jpg Figure S2: Top panel shows the processed record section with reduction velocity of 7 km/s for Reftek 4. The second panel shows the same processed record section overlain with calculated travel time arrivals from the final velocity model. The third panel corresponds to the ray tracing for the different phases for Reftek 4. The bottom three panels correspond to instrument Reftek 3. 3. 2007jb005113-fs03.jpg Figure S3: Top panel shows the processed record section with reduction velocity of 7 km/s for Reftek 2. The second panel shows the same processed record section overlain with calculated travel time arrivals from the final velocity model. The third panel corresponds to the ray tracing for the different phases for Reftek 2. The bottom three panels correspond to instrument Reftek 1. 4. 2007jb005113-fs04.jpg Figure S4: Top panel shows the processed record section with reduction velocity of 7 km/s for OBS 1. The second panel shows the same processed record section overlain with calculated travel time arrivals from the final velocity model. The third panel corresponds to the ray tracing for the different phases for OBS 1. The bottom three panels correspond to instrument OBS 2. 5. 2007jb005113-fs05.jpg Figure S5: Top panel shows the processed record section with reduction velocity of 7 km/s for OBS 3. The second panel shows the same processed record section overlain with calculated travel time arrivals from the final velocity model. The third panel corresponds to the ray tracing for the different phases for OBS 3. The bottom three panels correspond to instrument OBS 4. 6. 2007jb005113-fs06.jpg Figure S6: Top panel shows the processed record section with reduction velocity of 7 km/s for OBS 5. The second panel shows the same processed record section overlain with calculated travel time arrivals from the final velocity model. The third panel corresponds to the ray tracing for the different phases for OBS 5. The bottom three panels correspond to instrument OBS 6. 7. 2007jb005113-fs07.jpg Figure S7: Top panel shows the processed record section with reduction velocity of 7 km/s for OBS 7. The second panel shows the same processed record section overlain with calculated travel time arrivals from the final velocity model. The third panel corresponds to the ray tracing for the different phases for OBS 7. The bottom three panels correspond to instrument OBS 8. 8. 2007jb005113-fs08.jpg Figure S8: Top panel shows the processed record section with reduction velocity of 7 km/s for OBS 9. The second panel shows the same processed record section overlain with calculated travel time arrivals from the final velocity model. The third panel corresponds to the ray tracing for the different phases for OBS 9. The bottom three panels correspond to instrument OBS 10. 9. 2007jb005113-fs09.jpg Figure S9: Top panel shows the processed record section with reduction velocity of 7 km/s for OBS 11. The second panel shows the same processed record section overlain with calculated travel time arrivals from the final velocity model. The third panel corresponds to the ray tracing for the different phases for OBS 11. The bottom three panels correspond to instrument OBS 12. 10. 2007jb005113-fs10.jpg Figure S10: Top panel shows the processed record section with reduction velocity of 7 km/s for OBS 13. The second panel shows the same processed record section overlain with calculated travel time arrivals from the final velocity model. The third panel corresponds to the ray tracing for the different phases for OBS 13.