Lithification of loose sediments forms sedimentary rocks. Sedimentology is linked to the fundamental sciences of biology, chemistry and physics. Fossils deposited in rocks are biological and weathering, diagenesis and the formation of autochthonous sediments are chemistry. Sediment transport and deposition are linked to physics (Richard, 1988). Clastic rocks are the most common type of sedimentary rock. Clastic rocks are composed of clasts or rock fragments that are affected by weathering and erosion. Geologists identified sediments by examining sediment texture and composition, grain size, grain morphology, etc. The concepts of sediment maturity are the different maturity types, the grain morphology of the sediments, and the environment in which the sediments are deposited. Sediment maturity is due to sediment transport and environment. There are two types of sediment maturity, grain texture and rock composition. Grain textures were grain roundness, sediment sorting, and the presence of clay (Bokman, 1955). The definition of roundness was the ratio between the average radius of the corners and edges and the radius of the maximum inscribed circle (Richard, 1988). The rounding of grains was due to energy, duration, and transport mechanism. Grain surface textures can be angular and rounded. Quartz was the most abundant mineral. We can use quartz as an example to classify grain surface texture. The angular grains of quartz would present conchoidal fractures and could form in a glacial environment. The water-deposited quartz grain had a rounded surface and grooves caused by the impaction of other sediments (Richard, 1988). Quartz grain in wind turbines...... middle of paper ......equal grain sizes. A low energy environment produces immature sediments that have angular and different grain sizes. The sediments deposited in the lower reaches were more mature than upstream. ReferenceBarham. M. (2014). Conference 1: Practices and pores. Retrieved from https://lms.curtin.edu.au/bbcswebdav/pid-2860556-dt-content-rid-11036745_1/courses/312247-FacSciEng-6792727/L1_Particles%26Pores_SS201_2014.pdfBarham. M. (2014). Practice 1: Unconsolidated sediments. Retrieved from https://lms.curtin.edu.au/bbcswebdav/pid-2860565-dt-content-rid-11036754_1/courses/312247-FacSciEng-6792727/SS201_2014_Sedimentology_Practical_1.pdfBokman. J. (1955). Classification of sandstone: relationship to composition and texture. Journal of Sedimentary Petrology, 25, 201-206. DOI: 10.1306/74D7044D-2B21-11D7-8648000102C1865DRichard. C. (1988). Applied sedimentology. London, United Kingdom: Academic Press.