Figure F5. Downcore trends in mineralogy and chemistry compared to bulk density (shaded areas). A. Calcite. B. Total aluminosilicates (bulk sample less calcite, dolomite, and biogenic silica). C. Biogenic silica. D. SiO₂/Al₂O₃. E. Al₂O₃/TiO₂ (note reversed scale). F. K₂O/Al₂O₃. G. Muscovite. * = muscovite has been normalized to exclude dilution by calcite and biogenic silica.