Fig. 4: Analytically estimated characteristic time scales of basalt segregation, transport, and entrainment.
From: How lowermost mantle viscosity controls the chemical structure of Earth’s deep interior
a Time scales of segregation of basaltic crust τseg and b onset of thermo-chemical plumes τplume for different crustal thicknesses (indicated by line colors) are compared to the time it takes for the basaltic layer to be transported along the CMB from a downwelling to an upwelling (τconv, interface between blue and brown background colors). All parameters are given in Table S2.
