摘要
南海北部海底侵蚀区的地貌以侵蚀作用为主，从而形成的沙丘带、侵蚀槽谷、海底阶地、古河床暴露等海底地貌格局，是旬第四纪以来沉积间断或大面积沉积缺失的原因之一。侵蚀作用的发展演化与区域海平面的升降变化有关，低海平面时期以河流冲积为最典型的侵蚀残留地貌，至高海平面时，又遭到海底水动力作用的连续推移、搬运、堆积、改造。海底侵蚀是一种不稳定的地质因素，它制约和影响着海洋工程的正常进行，作为一种古地质体，对海洋油气等其它矿产的勘探开发具有一定的地质意义。
The geomorphology of submarine erosion province in the northern part of South China Sea is dominat- ed by erosion action,while forming the submarine geomophology framework of sand-dune belt,erosion val- ley,submarine terrace,palaeochannel exposure.And the erosion action has caused the sedimentary gap or hiatus in extensive area since the later Quaternary.However,the evolution and development of the erosion action are correlated with the regional variance of sea level,while dominated and acted by fluvial erosion and submarine hydroeynmism in lowstand and highstand of sea level respectively.The submarine erosion is an unstable geologic factor effecting the ocean engineering.In addition,it has potential geologic prospect in the exploration and development of offshore hydrocarbon and mineral resource.
出处
《中国海上油气（地质）》
1992年第5期49-55,共7页
China Offshore Oil and Gas(Geology)
