noun
- A small rounded stone or pebble, typically formed by the accumulation of mineral layers around a core.
Usage: geology; also called a pisoid or pisolite when referring to the rock composed of such stones
Examples
- The beach was covered with smooth pisolith formations created by wave action over centuries.
- Geologists examined the pisolith samples to understand the depositional history of the ancient lake.
- Each pisolith in the sediment layer showed concentric rings of mineral growth.
- The pisolith deposits indicated that the region had once been submerged in shallow water.