MATERIAL
The sites drilled during
Leg 167 can be subdivided into five different transects (Fig.
1):
- The Gorda Transect, up to 40°N,
which includes Sites 1019, 1022, 1020, and 1021, drilled in a region of
strong summer upwelling;
- The Conception Transect, at 35°N
(Sites 1017 and 1016), is influenced by year-round upwelling of fairly cool
surface waters;
- 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;
- 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
- 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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