Figure 3. Cross plots of weight-percent clay (<4-µm size fraction) and mean grain size (µm) vs. index properties of sediment (porosity, void ratio, water content, and bulk density) as determined by shipboard measurements of samples from Site 1023 (Shipboard Scientific Party, 1997b). Values of mean grain size are based on quartile measures (Krumbein, 1936) and apply only to the size fractions (<63 µm) that were analyzed by SediGraph. Note the separation of fields for turbidites and hemipelagic muds. Values of r are correlation coefficients for linear regression.