fossilize

Most of the booths had been scooped clean by the scalpel-sharp corner of the glacier in the crash. Three remained. Two of them were punctured and, inside, the once-human occupants had been fossilized into the walls by centuries upon centuries of patient ice.

I was getting fossilised myself, but of late my stock of ideas has been very much enlarged.

Ten layers of birthdays on a woman's head / Are apt to fossilize her girlish mirth.