ice over

I want to walk on a frozen lake with ice, real ice over deep water, under my feet.

Most of the coasters emerged from an open place in the ice over the rapids, but others came down the river over the snow.

What makes that thin incrustation of ice over the trunk and every twig which has been attracting my admiration these three days?

Ice over which Old Joe had passed safely a couple of seconds before cracked beneath Sue.

The surface of the ice over which they travelled was as smooth and even as a lake newly frozen over.