Sedimentary rocks are formed from a series of processes called erosion, deposition, compaction, and cementation. Sedimentary rocks are used for making cement, glass, and fertilizer.
Shale
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Fossils are often found in shale, which splits easily into flat pieces.
Many small holes between sand grains allow sandstone to absorb water. rock fragments with rounded edges make up conglomerate. Swamp plants that formed millions of years ago slowly changed to form coal. |