Figure 3. Spectral estimates for harmonic variance in the records of terrigenous river input (kaolinite/feldspar and K/Al ratios), bulk oceanic productivity (barium excess [Baex], marine organic carbon [MOC] weight percent, and mass accumulation rate [MAR]), opal productivity (opal weight percent and MAR), and excess siliceous productivity (opal/MOC) from the Congo Fan core GeoB 1008-3. Black arrows = precessional frequency band (from Schneider et al., 1997).

Figure 3. Spectral estimates for harmonic variance in the records of terrigenous river input (kaolinite/feldspar and K/Al ratios), bulk oceanic productivity (barium excess [Ba_ex], marine organic carbon [MOC] weight percent, and mass accumulation rate [MAR]), opal productivity (opal weight percent and MAR), and excess siliceous productivity (opal/MOC) from the Congo Fan core GeoB 1008-3. Black arrows = precessional frequency band (from Schneider et al., 1997).