中国东部海区编图及基本地学特征

Maps sets and geological features of eastern China seas and adjacent regions

随着我国海洋区域地质调查事业的发展,编制新的海区地质地球物理图件显得非常必要.中国东部海区1:100万地质地球物理系列图包括空间重力异常图、布格重力异常图、磁力异常图、表层沉积物分布图和区域构造图.本研究通过利用数字化编图技术对新旧资料进行同化和标准化处理,获得了大范围、基于新资料的图件成果.此外,在编图成果的基础上,本文总结了我国东部海区的地球物理场分区特征,表层沉积物分布特征,并划分了区域构造单元.编图成果将进一步促进对我国东部海区地质构造特征的认识.

As the development of marine geological surveying cause, it was greatly necessary for mapping the new geophysical maps sets in marine regions. The 1 ： 100 million geophysical maps sets, in Eastern China Sea, was grouped by Free air gravity anomalies maps, Bouguer gravity anomalies maps, magnetic anomalies maps, surface sediment distributing maps, and regional structuring maps. The digital mapping techniques were used to assimilate and standard the new and old literatures, and the large scale new maps were obtained in this study. Additionally, basing on the study results of geophysical maps sets, the study has summarized the geophysical field characteristics, surface sediment distribution characteristics, and then, the regional tectonic units were divided of Eastern China Sea. It was helpful for further understanding the characteristics of geological structure in Eastern China Sea.