Figure 5. Summary map showing the faults in the northern Gulf of California interpreted from high-resolution multi-channel seismic data, bathymetric contours every 50 m (thin blue lines), and major spreading centers shown in red (after Persaud et al., 2002). Location of multichannel seismic lines are indicated with red lines. In Line 17 across the southern Wagner Basin, the stratigraphic form accurately describes where and when accommodation is developed across the region because sedimentation from the Colorado River has paced active subsidence. Lines 25 and 62 across the southern Upper Delfin basin, showing high-angle, closely spaced normal faults taking up strain within the sedimentary section.