Carbon analyses were run at 5-cm intervals through 0-140 ka when possible (Fig. 3, Fig. 4) and at wider intervals below. Because of the different sedimentation rates (Fig. 5), sample spacing in years is somewhat variable. Sample spacing is about 500 yr in Site 1018 and Cores EW9504-17 and W8709-13, and at Site 1020 to about 28 revised meters composite depth (rmcd; ~ 250 ka; Table 4). Below that depth the sample spacing is ~2 k.y. For the other cores samples were spaced at ~3 k.y. in Core Y74-2-22, ~2 k.y. at Site 1011, ~1.5 k.y. at Site 1021, and varied from <0.1 to 3 k.y. at Site 1019. The data are reported in Table 4, Table 5, Table 6, Table 7, Table 8, Table 9, Table 10, and Table 11.
It is clear from Figure 3 and Figure 4 that there are CaCO3 and Corg events common to the records along the California margin, and, as one would expect, sites close together are more similar than those more separated. We will discuss the trends and implications more below. First, however, we will discuss the development of the continuous sediment splice at each site and the development of the chronostratigraphy.