Siltstone

Siltstone is a type of sedimentary rock formed from tiny particles of silt—grains smaller than sand but larger than clay. These particles accumulate over time, often in underwater environments like riverbeds or lakes. As layers build up, pressure compacts the silt particles together, creating a solid rock. Siltstone typically has a smooth texture and can display various colors. It’s often found in areas where other sedimentary rocks, like sandstone and shale, are present. Geologists study siltstone to understand the history of Earth's environments and the processes that shaped them.