The Earth's Shifting Crust by Charles Hapgood - wire of information

NORTH AMERICA AT THE POLE 2OJ
Assuming the radiocarbon dates to be correct, then, we
find that at the end of the Tazewell Advance there was a
recession, and that despite the readvances the ice gradually
thinned until the ice sheet disappeared. This can be ac-
counted for by the assumption that the crust was in motion,
and that it continued to move slowly during all or most of
the 10,000 years during which the icecap was in intermittent
decline. As I have already pointed out, there is no other
reasonable explanation for the disappearance of the ice sheet.
But the assumption is strengthened by a most remarkable
fact. It would have to be considered probable, as following
naturally from the theory, that as the crust moved there
would be a period, possibly prolonged, when the melting on
the equatorward side of the icecap would be balanced and
even more than balanced by further build-up of the icecap
on the poleward side. Thus, as the Wisconsin icecap moved
of the ice would continue on its north-
southward, build-up
ern side. The result would be that the ice center, the center
of maximum thickness, from which the ice sheet would move
out by gravity in all directions, would be 'displaced to the
north. And this is exactly what happened. Coleman writes:
Two important facts have been established by Low, who worked
over the central parts of the Labrador sheet: first, that the center of
the glaciation shifted its position, at one time being in Lat. 51 or
52, later in Lat. 54, and finally in Lat. 55 or 56. Instead of beginning
in the north and growing southward it reversed this direction;
second, that the central area shows few signs of glaciation, so that
the pre-glacial debris due to ages of weathering are almost undis-
turbed. A broad circle around it is scoured clean to the solid
rock. . . . (87:117).
There really could be no more eloquent confirmation of
the southward displacement of the earth's crust. We see veri-
fication here of one of the important mechanisms of displacement
as suggested by Campbell, which is that the continuing
build-up of the ice sheet on its poleward side as it moves
away from the pole will be a factor in prolonging the movement.
This may, indeed, result in the prolongation of the