Figure 4. Stratigraphic variation in the ratio of the red (650 nm) to blue (450 nm) wavelengths at Holes 1079A, 1079B, and 1079C. A five-point smoothing procedure was applied to the data set.

Figure 4. Stratigraphic variation in the ratio of the red (650 nm) to blue (450 nm) wavelengths at Holes 1079A, 1079B, and 1079C. A five-point smoothing procedure was applied to the data set.