TiO2/Al2O3 and K2O/Al2O3 are occasionally used as indicators of provenance of detrital material. TiO2/Al2O3 varies between 0.11 and 0.17, and K2O/Al2O3 varies between 0.29 and 0.60 (Table T4; Fig. F1E, F1F). The two values show positive correlation, suggesting that compositional variation of detrital material can be explained by mixing of two components. High values at 6.56 and 10.38 mbsf* correspond to sand patches. There seems to be weak positive correlation between Ti/Al and C/N ratios.