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

ANCIENT CLIMATES 77
Very possibly Ma could have avoided combining the two
different theories the slipping of the shell of the earth and
the drifting of continents if he had supposed a sufficiently
frequent slipping of the crust. The frequency of the displacements
suggested by the theory presented in this book, which
would involve many different equators in a single geological
period, would remove his difficulties. As it is, he has to face
all the geophysical and geological objections to the drifting
continent theory, as well as difficulties with his displacement
theory.
7. On the Rate of Climatic Change
Studies appear from time to time in which attempts are made
to trace climatic changes in specified areas over periods of
millions of years. In one of these, for example (72), the con-
clusion is reached that there was a gradual cooling of the
climate during a great many million years of the Tertiary
Period. It is true that no cause of such a progressive cooling
can be pointed to; neither is there any explanation as to why
the climatic change had to be so gradual. It is simply assumed
that the climatic change had to be gradual, and that the cause
of the change had to be such as to explain imperceptible
climatic changes over millions of years of time.
It is important to define as clearly as possible the nature
of the evidence on which these conclusions are based. In the
example I am considering, the following facts have decisive
importance:
a. The period of time involved in an alleged cooling of
the climate is of the order of 30,000,000 years.
b. Wherever reference is made to the specific strata of rock
selected for analysis of the climatic evidence (consisting
of included fossils), it is clear that the time required for
the deposition of a particular layer was of the order of
10,000 years.