Figure 3. Variations of biogenic and terrigenous components of Hole 1020B since 800 ka. In the interval from 400 to 600 ka, biogenic silica and carbonate are diluted by terrigenous materials. The gray region shows the depth interval where biogenic components have been diluted by terrigenous materials.

Figure 3. Variations of biogenic and terrigenous components of Hole 1020B since 800 ka. In the interval from 400 to 600 ka, biogenic silica and carbonate are diluted by terrigenous materials. The gray region shows the depth interval where biogenic components have been diluted by terrigenous materials.