What is the difference between sandstone and gravel
gravel soilRock or mineral debris with an average particle size greater than 1 mm. According to the average particle size, and can be subdivided into boulders, gravel and coarse gravel gravel three: the average particle size of 1 to 10 mm, said 10 fine gravel; 100 mm, that is greater than 100 mm thick gravel; Boulder, said. The gravel is cemented to form a conglomerate, or breccia
Quartz, feldspar and other clastic components accounted for more than 50% of sedimentary clastic rock. Sandstone is formed by weathering, denudation and transport of rocks in source rocks. The rock consists of two parts: clastic and interstitial. Detrital minerals: quartz, feldspar, muscovite, calcite, clay minerals, dolomite, chlorite, chlorite and so on. The interstitial material comprises two components of the cement and the clastic complex. Common cements are siliceous and carbonate cements; the miscellaneous component is mainly a finer clay or silty sand that is deposited at the same time. The composition and structure of interstitial materials reflect the geological environment and physical and chemical conditions of sandstone formation. Sandstone can be divided into three categories: quartz sandstone, feldspar sandstone and lithic sandstone. Sand and sandstone are the main reservoirs of petroleum, natural gas and groundwater. Sand and sandstone can be used as abrasives, glass raw materials and building materials. Some of the occurrence of sand and sandstone is rich in gold, diamond, zircon, ILMENITE PLACER, Jin Hongshi etc..
Sandstone is composed of quartz grains (sand), which is stable in structure, usually light brown or red. Sandstone is a sedimentary rock, mainly formed by cementation of sand, the sand content should be greater than 50%. Most of the sandstone is composed of quartz or feldspar. The main component of A. quartz composition of more than 52%; B. clay around 15%; C. goethite about 18%; D. other substances more than 10%.
