At Site 1087, four holes were cored with a maximum penetration of 491.9 mbsf. Physical properties data were measured at 5-cm (Hole 1087A, 0–60 mbsf) and 10-cm (Hole 1087A [below 60 mbsf] and Holes 1087B and 1087C) intervals. Physical properties for Hole 1087D were not measured. The correlation of features present in the physical properties measurements of adjacent holes was used to demonstrate the completeness of the local stratigraphic sequence drilled and to establish a depth scale in terms of meters composite depth (mcd) for Site 1087. The continuity of the stratigraphic sequence could be demonstrated between 0 and 214 mcd (Fig. 9, Fig. 10; Table 8).
At Site 1087, magnetic susceptibility and GRAPE density were used to establish the mcd scale. The data sets were extensively processed before being used for correlation. Suspect measurements were eliminated by thresholding the data. The resulting data were smoothed using a 31-cm Gaussian filter. All data shown in Fig. 9 and Fig. 10 were processed as described above.
The spliced record presented in Figure 10 is continuous to 214 mcd for magnetic susceptibility and wet bulk density (Table 9). The selection of cores to be included in the spliced record and the placement of tie points were carried out mainly using the composite section of magnetic susceptibility.
The growth of the mcd scale compared with the standard ODP mbsf scale is ~10% (Core 175-1087B-21H at 205 mcd and 182 mbsf; Fig. 11).