What is "limestones"

Usage examples of "limestones".

The cliffs are early Triassic sandstone laid atop Permian coal measures, under which lie the granites, shales and limestones of Devonian and Silurian times.

The Dales' limestones consist essentially of calcium carbonate, with high concentrations of potassium, phosphorus and other trace elements.

That was common in the Dales, with multiple megatonnes of water coming down off the Drakon slopes every year and hundreds of thousands of square kilometers of old marine limestones to run through.