MATERIAL

The sites drilled during Leg 167 can be subdivided into five different transects (Fig. 1):

  1. The Gorda Transect, up to 40°N, which includes Sites 1019, 1022, 1020, and 1021, drilled in a region of strong summer upwelling;
  2. The Conception Transect, at 35°N (Sites 1017 and 1016), is influenced by year-round upwelling of fairly cool surface waters;
  3. The north-south Coastal Transect from 31°N to 42°N, is composed of Sites 1019, 1022, 1018, 1017, 1014, 1013, 1012, and 1011, which spans 1000-2500 m water depth;
  4. The Northern Depth Transect from 37°N to 42°N (Sites 1019, 1022, 1018, 1020, and 1021), which spans 1000-4200 m water depth; and
  5. The Southern Depth Transect from 30N° to 35°N (Sites 1015, 1017, 1013, 1014, 1012, 1011, 1010, and 1016), which spans 475-3850 m water depth.

The sites studied are located along the California margin (Fig. 1) and are listed in Table 1, where the sampling resolution for each site is reported. The temporal extension of the various sections is summarized in Figure 3, where the available magnetostratigraphic records are shown.

Approximately 1900 samples were analyzed.

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