there's also evidence

for earth shrinkage

from [link to jgs.lyellcollection.org (secure)]
Contraction of the earth's surface due to shrinkage of the interior is the only adequate explanation of the compression zones, but the amount attributable to cooling is thought to be inadequate. Estimates of the extent of compression during the Alpine, Hercynian, Caledonian and at least three Pre-Cambrian phases give a contraction of the earth's circumference of at least 3000 km. and perhaps much more