In terms of any other indication of the entry of an object, which I have suggested on the basis of my shield re-construction, the plate boundaries also tell alot about the interior of the Earth via earthquake waves. In this following section I will outline a comparison of plate boundaries which I believe shows something of their nature that would only be the case in an expanded Earth and something of the interior that is a second route to the original Indian impactor. I refer to this as 'Mirror-plating'.

EARTHQUAKE WAVES:

Earthquake waves are reflected and refracted by any change in density along their path, just as light is bent on passing from air to water. As the earthquake wave passes through the mantle, the inner core, and the core itself, its path is continually refracted.

This distortion causes the pattern of the waves produced by volcanic and earthquake activity along the plate boundaries to become inverted as they pass through the planet's interior.

By the time the waves reach the other side the 'image' of the plate boundary becomes a mirror of itself.