Grit is a good example of

Grit is a good example of mechanically formed sedimentary rock. Mechanically formed sedimentary rocks are formed by the accumulation and consolidation of sediment, which is produced by the weathering and erosion of pre-existing rocks. Grit specifically is a type of sedimentary rock that is made up of sand-sized particles of quartz and other minerals, which have been transported by wind or water and deposited in layers. Over time, these layers become compacted and cemented together to form solid rock. Therefore, grit is not formed by volcanic activity, organic processes, or metamorphic processes.