Types of sedimentary rocks

Sedimentary rocks- rock pieces, small pieces, grainy,  cemented                                                         

  –weathering down→erosion→ deposition→ compaction→ cementation 

Sedimentary rocks are formed from pre-existing rocks or pieces of once-living organisms. They form from deposits that accumulate on the Earth's surface. Sedimentary rocks often have distinctive layering or bedding.