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

THE ICE AGES 57
e. It must solve the problem of increased precipitation
with colder climate.
f. The facts call for a mechanism that either increases the
precipitation or lowers the temperature very gradually
over a period of thousands of years.
It is evident that a displacement of the crust could initiate
an ice age by moving a certain region into a polar zone, while
a later displacement could end the ice age by moving the
same area away from the polar zone. The increased precipitation
and the oscillations of the borders of the ice sheets can
be explained by the atmospheric effects that would result
from volcanism associated with the movement of the crust.
These effects will be discussed in later chapters.