The areas of present volcanic and earthquake
activity, when compared to their configuration at the time of the
proposed original impact, suggested by the hole in the Indian plate,
show what I believe to be the pattern of the expansion of the planet
The main characteristic of this movement is the expansion of the
Pacific Ocean as it is pushed outwards opposite the point of original
impact and entry. This first expansion ( to the continental shelves
) appears to be caused by displacement.
I would speculate that the hole is the result of an event which
injects the core of iron into the embryonic shell which is the original
shields. I don't believe this event is the impact of a Mars sized
planet which threw out the moon, as is now widely believed ( see
'Beta Pictoris' ).
To see the role that this collision plays in the proposed life
cycle of an Earth on this website, see this section through to ‘Object
in the Interior’ and ‘Mercury’.