curvature of old rocks

Mo wrote:
If there are old rocks that have not gone through much
compression, and they were layered horizontally when
formed, then one might be able to measure the curvature
of these layers. If the Earth was smaller, then the
curvature would be greater. Thus we would expect to find
a lot of old rocks with a similar curvature. And thus the
diameter of the Earth.
Mo

Good one, Mo. ... We'll add it to the list for when this lot gets back
from the boozer, ..see if it gives them any ideas. (Gee, ..dip and
strike, ..they will not like this one little bit.)

Do you have a geological background by any chance?