Here is a list of twelve important sedimentary rocks: 1. Breccia 2. Conglomerates 3. Sandstones 4. Shale 5. Limestones 6. Dolomite 7. Coals 8. Iron Ores 9. Gypsum 11. Rock Salt 12. Flint and Chert. 1. Breccia: It is a mechanically formed sedimentary rock classed as Rudite. It consists of angular fragments of heterogeneous composition embedded in a fine matrix [...]
The following are the twelve main characteristics of sedimentary rocks. (1) Sedimentary rocks are formed of sediments derived from the older rocks, plant and animal remains and thus these rocks contain fossils of plants and animals. The age of the formation of a given sedimentary rock may be determined on the basis of the analysis of the fossils to be [...]
In this article we will discuss about the classification of sedimentary rocks on the basis of the nature of sediments:- 1. Mechanically Formed Sedimentary Rocks 2. Chemically Formed Sedimentary Rocks 3. Organically Formed Sedimentary Rocks. 1. Mechanically Formed Sedimentary Rocks: Previously formed rocks are subjected to mechanical or physical disintegration and thus the rocks are broken into fragments of different [...]