3D Spherical Mantle Convection Models illuminate the Coupled Preservation of Recycled and Primordial Heterogeneity in Earth’s Lower Mantle

Anna J. P. Gülcher, ETH Zürich, Dept. of Earth Sciences, Zürich, Switzerland, Maxim Ballmer, UCL, Dept. of Earth Sciences, London, United Kingdom and Paul J Tackley, ETH Zürich, Department of Earth Sciences, Zürich, Switzerland