海岸砂质堆积形态是由砂质堆积的海岸沙嘴、沙坝、沙堤、连岛沙洲等各种形态构成。其形成与沿岸海域风浪、海流等动力、海域泥沙流、新构造运动、海岸地形及人为开发等综合因素有关,其规模大小反映形成因素的强弱,形态延伸方向指示沿岸海域泥沙运动趋势。故此类形态也构成为体现沿岸海洋环境的一项地质指标。闽、台海岸位于台湾海峡东、西 Coastal sand accumulation mode is composed of sandy sediment coast sand mouth, sand dam, sand embankment, with island sandbar and other forms of composition. Its formation is related to such factors as storm waves, currents and currents in the coastal waters, sediment flow in the sea area, neotectonic movement, coastal topography and man-made development. The size reflects the strength of formation factors and the shape extension direction indicates the trend of sediment movement in coastal waters . Therefore, such a pattern also constitutes a geological indicator of coastal marine environment. Min, Taiwan coast is located in the east and west of Taiwan Strait