Sedimentary rocks can be subdivided into four groups based on the processes responsible for their formation: clastic s… 展开

Alternatively, sedimentary rocks can be subdivided into compositional groups based on their mineralogy:
• Siliciclastic sedimentary rocks, are dominantly composed of silicate minerals. The sediment th… 展开

Sedimentary rocks are formed when sediment is deposited out of air, ice, wind, gravity, or water flows carrying the particles in suspension. This sediment is often formed when weathering and erosion break down a rock into … 展开

The color of a sedimentary rock is often mostly determined by iron, an element with two major oxides: iron(II) oxide and iron(III) oxide. Iron(II) oxide (FeO) only forms under low oxygen (anoxic) circumstances and gives the rock a … 展开

The setting in which a sedimentary rock forms is called the depositional environment. Every environment has a characteristic combination of geologic processes, and circumstances. The type of sediment that is deposited is not … 展开

Places where large-scale sedimentation takes place are called sedimentary basins. The amount of sediment that can be deposited in a basin depends on the depth of the basin, the so-called accommodation space. … 展开