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

EARTH'S SHIFTING CRUST
If we assume that Alaska was at the pole during this warm
period in the Atlantic, the site of this core would then have
been farther from the pole than it is now; that is, it would
have been south of its present latitude. Quite naturally the
water would have been warmer. A glance at the globe will
suffice to make this plain.
On the other hand, if we now consider Core A 180-75,
taken in the eastern Equatorial Atlantic, nearly on the
equator, the opposite situation is revealed. A pole
in Alaska
would displace this core southward from the equator, pos-
sibly as far as the 2Oth parallel of South Latitude (depending,
of course, on the precise location of the pole in
Alaska).
Quite probably, the water would be colder then than it is at
present, other things being equal.
The two Caribbean cores would, with the Alaskan pole,
have had approximately the same latitude as at present; the
uncertainty as to the precise location of that pole makes it
impossible to draw any reliable conclusions from them.
Both the Caribbean cores indicate a temperature minimum
about 55,000 years ago, which would correspond well
with the date we have tentatively assigned for the arrival of
Greenland at the pole; they both show the temporary warm
period that was shown in the Arctic cores, which we have
interpreted as marking the breakup
of the Greenland conti-
nental icecap. They then show a gradual temperature decline
from about 40,000 to about 1 1,000 years ago, which may cor-
respond, first, to the growth of the Wisconsin continental
icecap and, finally, to the movement of the ice center of that
icecap eastward into Labrador during the declining phases of
the glaciation.
At this point it is important to consider a contradiction
between the Caribbean cores and the core from the eastern
Atlantic. It appears that the ocean temperature reached its
minimum, after the early warm period, in the eastern Atlantic
about 20,000 years before it did in the Caribbean.
This is a very important difference. How is it to be ex-
plained?