Figure 6. A composite stratigraphy from industrial wells in the eastern part of the Pearl River Mouth Basin, which lies on the shelf and uppermost continental slope northwest of the northern sites (PRMB in Fig. 5; see Fig. 9 for bathymetry). These wells provide the seismic reflector sequence and general age structure that we hope to correlate to the more marine ODP sites on the slope. Note the nonmarine sequence beginning from late Oligocene (modified from Jiang et al., 1994).