三角洲是河流补给的巨大沉积体系。国内外石油和天然气的勘探实践证明,古三角洲往往蕴藏着丰富的油气资源,许多油田都与三角洲沉积有关。然而,埋藏在地下的古三角洲在漫长的地质时代里,经常遭受严重破坏,而现代三角洲则可以直接观测。所以研究现代三角洲的沉积特征,为判断古三角洲提供识别标志和对比模 The delta is a huge depositional system of river recharge. The exploration of oil and natural gas at home and abroad proves that the ancient delta often contains rich oil and gas resources, and many oil fields are related to the sedimentation of the delta. However, buried in the ancient Paleotopes in the long geological age, often suffered serious damage, while the modern delta can be directly observed. Therefore, the study of the sedimentary characteristics of the modern delta, to determine the ancient delta provide identification marks and contrast mode