Figure 1. Physiography of the Cascadia Basin region (after Karl et al., 1989). Numbers in boxes refer to previous drill sites of the DSDP and ODP. Heavy line with teeth represents approximate position of the Cascadia subduction front and eastern edge of Cascadia Basin.

Figure 1. Physiography of the Cascadia Basin region (after Karl et al., 1989). Numbers in boxes refer to previous drill sites of the DSDP and ODP. Heavy line with teeth represents approximate position of the Cascadia subduction front and eastern edge of Cascadia Basin.