One of the hypotheses to explain the Large low-shear-velocity provinces at the Earth Mantle-Core boundary is that they are remnants of the impactor that lead to

One of the hypotheses to explain the Large low-shear-velocity provinces at the Earth Mantle-Core boundary is that they are remnants of the impactor that lead to the formation of the Moon: https://en.wikipedia.org/wiki/Large_low-shear-velocity_provinces#Possible_origin https://en.wikipedia.org/wiki/Large_low-shear-velocity_provi...