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

EARLIER DISPLACEMENTS OF CRUST 2Q3
would, of course, affect the climate and therefore the vegeta-
tion growing in an area. It is generally considered that 1,000
feet in elevation is the equivalent of about eight hundred
miles in latitude, so far as plant habitats are concerned. We
therefore have to take into consideration the possible effect
of an uplift of the plains during the time that the sediments
were accumulating. In view of the fact that the 645 feet of
of time exceed-
sediments may easily embrace a total period
ing a million years, or the length of the whole Pleistocene
Epoch, and since we have evidence that there were a number
of ice ages in North America during the Pleistocene, before
the Wisconsin glaciation, we may be forced to assume that
there was a considerable uplift of the plains during the
Pleistocene. However, it is reasonable to suppose that during
the comparatively short period we are now discussing the
period from about 40,000 to about 90,000 years ago the up-
lift may not have been of major proportions.
Our Greenland pole is supported by other lines of evi-
dence. In evaluating them, however, we shall have to take
into consideration the still earlier hypothetical position of
Alaska at the pole.
b. Some North Atlantic Cores
A number of cores have been taken in the North Atlantic,
and dated by the new methods of absolute dating. Despite
the fact that these cores were obtained independently by
different scientists, and dated by different methods, we shall
find that they agree well, and that they support our basic
assumptions.
The cores to be considered include three taken from the
North Atlantic in about Lat. 46-49 N., and dated by the
ionium method, and three cores from the Caribbean and
the Equatorial Atlantic.
The last three cores were prepared by Ericson, who ana-
lyzed their enclosed foraminiferal remains for evidence of
climatic change. They were subjected to radiocarbon tests by