Sedimentary Rocks

Sedimentary rocks include limestonesLimestone, sandstonesSandstone, conglomeratesConglomerate, siltstones, mudstonesMudstone, shalesShale and claysClay. They are formed by the accumulation or deposition of mineral or organic particles at Earth’s surface. SandstonesSandstone are clastic sedimentary rocks composed mainly of sand-sized (0.0625–2 mm) silicate grains. They comprise about 20–25% of all sedimentary rock. Examples of sandstoneSandstone landscapes are given from JordanJordan, Saudi ArabiaSaudi arabia, North Africa, AustraliaAustralia, South AfricaSouth africa, ChinaChina, the American south west, and the Gran SabanaGran sabana of South America. Also discussed are tors on various lithologies, and the landforms associated with conglomeratesConglomerate, with examples from GreeceGreece, SpainSpain, AustraliaAustralia and BrazilBrazil. Landscapes formed in mudstonesMudstone and other fine-grained sedimentary rocks, include BadlandsBadlands. Finally, notably in AustraliaAustralia, silcreteSilcrete duricrustsDuricrust have an impact on landscapes.