In this instance
( in contrast to conventional plate-tectonic reconstuctions, made
on a constant radius of the Earth's present 12,800 km diameter)
these shields re-assemble into a smooth featureless sphere approximately
4,800 km in diameter ( or a diameter similar to that of Mercury.
see: Mercury ). Their
magnetic striping realigns into parallel lines running equatorially
( in relation to the present position of the equator ).
But, more interestingly, there is a huge
hole in the side of it, 2,000 km wide, between the Indian and African
shields, exactly where the Himalayas are now.
Areas of present volcanic and earthquake
activity realign and emanate from this hole, running around the
sphere, along the North African and South American shield boundaries,
meeting on the other side, at the antipode of the hole, at the point
which will become the San Andreas Fault.
( The surface magnetic field used in
this reconstruction is based on the World Magnetic Declination Field
from 1995. Magnetic declination varies locally from year to year
but is connected to the overall crustal or surface magnetic field
which remains consistent. Click here for: World
Declination Map )