分析了冰后期以来北黄海淤泥质海岸变迁及海岸地貌的形成和滩涂的自然分带。
The northern Yellow Sea muddy coast changes, the formation of coastal landform and the natural zoning of tidal flat are analysed.
湖北经历过几次重要的海陆变迁和造山运动后，到晚第三纪时，逐渐形成了近代地貌的雏形。
After going through several important sea-land changes and orogenic movements, Hubei has formed the embryo of the modern geomorphology gradually until the late stage of Tertiary Period.
现代松辽水系是在松辽盆地地质构造、古地貌发育的基础上，几经变迁逐渐演变而成的。晚第三纪以来，古松辽水系经历了几次大规模的河湖交替。
Since the Neogene, the ancient Songhua-Liao River system have undergone several changes with the alternation of fluvial and lacustrine formation on a large scale.
应用推荐