Figure 5.2. Ratio between the number of recovered sections and the total number of times recovery was attempted at 1-m.y. resolution. Sections that recovered sediments containing at least 5% of the one m.y. interval are included. The horizontal line represents the average recovery ratio for all the sections analysed (0.89). The data are limited to the sections included in Neptune and for which we have age control. This means that in some instances, deeper sediments were also recovered, but no biostratigraphic study done on them to provide us with an age model. This graph does not reflect the ‘true’ availability of sediments but only the time interval that was recovered in each section - it includes also intervals that are represented by hiati (see Fig. 3.3), which are e.g., quite frequent in Miocene sediments. Note that Paleocene sediments are overall quite well recovered even though scarce (Fig. 3.2), an improvement from the early study by Moore (1972) which identified this interval as the least well represented in the Cenozoic sediments recovered by the early DSDP legs.