Which preposition to use with demarcate

from Occurrences 1%

Indeed, only when such a state of things has begun to be realized, can Civilization, as sharply demarcated from Barbarism, be said to have fairly begun.

on Occurrences 1%

This being a time of huge growth, water was sapped up beyond the limits of the local ecology and the coastal regulation zone (the area demarcated on the beach up to where the hotels could be built) was debated and apparently ignored in many instances.

within Occurrences 1%

If the whole force of the distinction which lies in that epithet prose be fairly appreciated, no one, we think, will dispute the compliment; for out of Shakspere it would be difficult to find characters so typical yet so nicely demarcated within the limits of their kind.

Which preposition to use with  demarcate