Science Advances

Supplementary Materials

This PDF file includes:

  • Fig. S1. Numerical-model predictions of slab descent through a mantle with a gradual increase in viscosity between 660- and 1500-km depths.
  • Fig. S2. Histogram of predicted stagnation depths for slabs that stagnate in the uppermost lower mantle.
  • Fig. S3. Numerical-model predictions of slab descent as a time series.
  • Fig. S4. Initial condition of the center of the numerical-model box for a case with τ = 50 My, β = 45°, and XLM = 10%.
  • Fig. S5. Compositional mantle evolution predicted by global-scale geodynamic models for different lower-mantle density profiles of basalt.
  • Fig. S6. Compositional mantle evolution predicted by global-scale geodynamic models.
  • Table S1. Notations.
  • Table S2. Sources of data for Fig. 5.
  • Table S3. Hypothetical (molar) abundances of major oxides in the lower mantle.
  • References (81–96)

Download PDF

Files in this Data Supplement: