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本文通过资料分析,对珠江流域的地貌概况作了阐述,指出珠江流域水系地貌的基本特征,它与流域内的地质构造有着密切关系。地质构造性质决定了现阶段珠江流域内各大水系发育的基本轮廓,它们的状态是在中生代中期,即在燕山期块断运动基础上发育发展;并经第三纪以来,以大面积升降运动为主要形式的新构造运动而进一步加深水系的联通,形成今日珠江流域的面貌。本又从构造地貌学的观点,对东江、北江、西江主干地段、珠江三角洲、广西盆地内水系和红水河上游水系的发育简史作了分析。
In this paper, the geomorphology of the Pearl River Basin is expatiated through data analysis. The basic characteristics of the Pearl River Basin ’s water system are pointed out. It is closely related to the geological structure in the basin. The nature of geological structure determines the basic outline of the development of major water systems in the Pearl River Basin at this stage. Their state is developed in the mid-Mesozoic, that is, on the basis of Yanshanian block-off movement. Since the Tertiary, As the main form of new tectonic movement and further deepen the water system Unicom, forming the face of today’s Pearl River Basin. Based on the study of structural geomorphology, this paper also analyzes the brief history of the development of the Dongjiang, Beijiang, Xijiang trunk areas, the Pearl River Delta, the basin water systems in Guangxi and the upper reaches of the Hongshui River.