Extended Data Fig. 2: Simplified calculations showing that the sum of subducted IF mass would likely fit within a layer ≤4 km thick above the CMB.
From: Links between large igneous province volcanism and subducted iron formations
If IFs persist in the lowermost mantle, they might remain seismically undetectable with the current resolution limitations of ~5 km above the CMB (ref. 16) in the absence of vertical deformation.
