I can only think of two examples of sedimentary rocks.

The Mississippi River carries millions of tons of nutrient-rich sediment into the Gulf each year.

Wetlands also absorb excess nutrients, sediments, and other pollutants before they reach rivers, lakes, and other waterbodies.

Shale rock is a sedimentary rock made up of clay, compacted together by pressure.

Layers of sediment lay at the bottom of the riverbed.

Stromatolites are the limestone structures formed by photosynthesizing bacteria called cyanobacteria. They created layers of alternating slimy bacteria and sediment in very shallow water, dominating shallow seas until predators, such as trilobites, came into the picture.

If all the conditions are right, fossils are formed as the layers of sediment turn into rock.

Agriculture, forestry and urbanization are increasing the amount of sediment, chemicals and plastics flowing into the oceans, and contaminating the coastline.

Sediment cores from the bottom of Yellowstone’s lakes contain fossils of pollen deposited during the Late Pleistocene. These pollen records show which plants were present at that time and allow researchers to infer climate conditions.

Between 3 billion and 4 billion years ago, a river there flowed into a body of water the size of Lake Tahoe, depositing sediments packed with carbonite minerals and clay.