Figure F5. Clay content and contents of smectite, illite, and chlorite in upper Quaternary sediments of gravity core PS1565 (Hillenbrand, 2000). Smectite contents exhibit maxima during the interglacial oxygen isotope Stages 5 and 1, and chlorite concentrations are highest during glacial Stages 6 and 4-2. Clay and illite contents show no significant trends.