摘要 : The sedimentary environment and sedimentary facies can be explained by using the grainsize parameters of sedimentary rock. Generally, grain-size parameters are obtained from the normal distribution curve, which is made by grain-si... 展开 The sedimentary environment and sedimentary facies can be explained by using the grainsize parameters of sedimentary rock. Generally, grain-size parameters are obtained from the normal distribution curve, which is made by grain-size analysis data of the debris of sedimentary rock. From the different combinations of the parameter values, sedimentary environment can be determined. We can also explain hydrodynamic states from the normal distributed probability curve of the debris of sedimentary rock and then both sedimentary envi- 收起