Figure F5. Contents of biogenic opal, total organic carbon (TOC), calcite (CaCO3), and biogenic barium (Babio) in sediments at gravity core site PS1565 plotted vs. depth (taken from Hillenbrand, 2000). Note that only the maxima in opal contents correlate with the maxima in Babio concentrations of interglacial marine isotope stages (early Stage 5 as well as Stage 1), whereas TOC and CaCO3 exhibit significant differences.