Figure 11. Summary diagram of coring results at Site 1143 on the mcd scale. Maximum penetration measured with the drill pipe is 500 mbsf. The core recovery column is a graphic presentation of the cored and recovered intervals for each hole. Larger gaps are the result of coring problems (<100% nominal recovery); smaller gaps (typically 0.5-2.0 m), revealed by hole-to-hole correlation, occur even when nominal core recovery is 100% or more. The graphic lithology column presents the major sediment types: horizontal line patterns are clay; diagonal dashed patterns are nannofossil ooze with foraminifers. Lithologic units are also shown. Mass accumulation rates (MARs) were calculated for total sediment (light gray histograms) and carbonate only (darker gray, solid histograms) from 5-m interval sampling of the smoothed depth-age model, dry density, and carbonate concentration. The smoothed depth-age curve (line) is overlain with control points from nannofossil (squares) and foraminifer (circles) biostratigraphy and magnetostratigraphy (crosses [shown for other sites]). The color reflectance lightness (L*) parameter (solid line) was measured every 2-4 cm and smoothed with a 20-point moving average for this figure. Carbonate concentration, expressed as percent calcite (dots with dashed line), was measured every ~3.5 m. Magnetic susceptibility (thicker line) and natural gamma radiation (thinner line) were measured every 2-5 cm, and the records presented here are smoothed with a 20-point moving average. Porosity (solid line) and grain density (dots with dashed line) were calculated from moisture and density measurements on samples taken every 1.5-3.0 m. Bulk density (solid line) and dry density (dots with dashed line) were calculated from moisture and density measurements on samples taken every 1.5-3.0 m.

Figure 12

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