What are organic sedimentary rocks?
Flexi Says:
Sedimentary rocks are classified by what kind of sediments they have. Clastic sedimentary rocks are made from rock and mineral fragments that are compressed and cemented together to make a rock. These sediments vary in size and may be gravel, sand, silt, or clay. Chemical sedimentary rocks precipitate from a fluid. Organic sedimentary rocks, such as limestone and coal are made from the bodies of plants and/or animals.