Here's a breakdown:
* Sedimentary rocks are formed from the accumulation and cementation of sediments, which are tiny particles of minerals, rock fragments, and organic matter.
* Compression is a key process in the formation of sedimentary rocks. As sediments accumulate, the weight of overlying layers compresses the lower layers, squeezing out water and air and binding the particles together.
* Cementation occurs when minerals dissolved in groundwater precipitate between the sediment particles, further solidifying the rock.
Examples of sedimentary rocks include sandstone, limestone, shale, and coal.
