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

XI : CAMPBELL'S MECHANISM OF
DISPLACEMENT
i. The Logic of the Evidence
Readers of this volume may have reached the conclusion
that displacements of the earth's crust have occurred, perhaps
frequently, and very recently in the earth's history, and yet
they may doubt that the icecaps caused the displacements.
It may seem to them that other causes may have brought
about these effects, or perhaps that a combination of causes
has done so.
There are several reasons for concluding that the cen-
trifugal effects of asymmetrically placed icecaps were, in fact,
the cause of the displacements. The first of these is that con-
tinental icecaps are the most massive and the most rapidly
developed dislocations of mass known to have occurred at
any time on the earth's surface. All other known geological
processes subject to measurement, such as erosion and volcanic
activity, are inadequate in tempo or in quantity to
produce equal centrifugal
within the earth, known or conjectured, can compare quanti-
effects. No dislocation of mass
tatively in equal periods of time with the effect of an icecap
of the magnitude of the present icecap in Antarctica. Every
theory so far advanced to account for changes at the surface
of the earth (such as displacements of the crust) by changes
in depth have postulated long periods for the completion of
the changes. The geological evidence presented in this book
can be understood only in terms of displacements of the crust
at very short intervals during at least a large part of the
earth's history, with a most recent displacement through no
less than 2,000 miles of latitude in a period of about 10,000
years at the end of the North American ice age.
All this evidence calls for a large displacing force that