Image Courtesy of Department of Earth & Atmospheric Sciences, University of AlbertaFormation of an impact-induced Earth's mantle heterogeneity. The figure shows the location of the projectile's core (dark brown) and mantle (green) particles. Earth's particles are not shown for clarity, and the red and grey half-spheres indicate the Earth's core and surface, respectively. The yellow cone defines a region, or domain, of high concentration of projectile's core material. The inset shows an image of a komatiite, a mantle-derived volcanic rock, with the characteristic olivine spinifex pattern due fast cooling at the surface. These kind or rocks could probe projectile enriched mantle domains that formed early in Earth's history.