leohtttbriar

Limestone, in particular, has long been a geology of burial–in part because it is so common globally, in part because its erosive tendencies create so many natural crypts into which bodies may be laid, and in part because limestone is itself, geologically speaking, a cemetery. Limestone is usually formed of the compressed bodies of marine organisms–crinoids and coccolithophores, ammonites, belemnites and foraminifera–that died in waters of ancient seas and then settled in their trillions on those seabeds.

Underland: A Deep Time Journey, Robert Macfarlane