GENERAL GEOLOGY

Detailed explanation-1: -Clastic sedimentary rocks are made from rock and mineral fragments that are compressed and cemented together to make a rock. Chemical sedimentary rocks precipitate from a fluid. Sometimes the precipitation is aided by organisms. Organic sedimentary rocks are made from the bodies of plants and/or animals.

Detailed explanation-2: -Common sedimentary rocks include sandstone, limestone, and shale. These rocks often start as sediments carried in rivers and deposited in lakes and oceans.

Detailed explanation-3: -Thus, there are 4 major types of sedimentary rocks: Clastic Sedimentary Rocks, Chemical Sedimentary Rocks, Biochemical Sedimentary Rocks, and Organic Sedimentary Rocks.

Detailed explanation-4: -Chemical sedimentary rocks form when dissolved materials preciptate from solution. Examples include: chert, some dolomites, flint, iron ore, limestones, and rock salt. Organic sedimentary rocks form from the accumulation of plant or animal debris.

Detailed explanation-5: -Biochemical and organic sediments are clastic in the sense that they are made from pieces of organic material that are deposited, buried, and lithified; however, they are usually classified as being chemically produced.