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黄海是我国四大海域之一,地理上俗分为北黄海和南黄海两部分.其中南黄海以我国胶东半岛东端的成山头至朝鲜白翎岛连线与北黄海分野,南则以长江口至济州岛一线与东海为界;它西临山东和苏北陆地,东濒朝鲜半岛,面积约30.2万平方公里.六十年代初,各部门的海洋地质调查队伍就先后对它进行了不同程度的地质-地球物理综合调查(包括重、磁、地震、水深、海底地貌、沉积、海岛调查),现已基本查明其区域构造轮廓、地球物理场和地质构造特征,并圈定了数百个局部构造,且已施钻11口(地质矿产部7口,外国公司4口),但它却是迄今中国海域唯一未见油气的海区.其找油气前景如何?找油方法与方向有何特点?这些问题仍为人们所关注,笔者认为颇值得进一步探讨.一、南黄海的沉积-构造演化史欲了解此区的找油气潜力,首先要研究其沉积实体和造成此实体的环境及其演变的地质背景.南黄海同邻区苏北陆地一样,从地质历史上看是几经“沧桑”.概括来讲,可归纳为四个沉积-构造发展阶段:1.震旦纪—早中三叠世地台体制下的发育阶段
The Yellow Sea is one of the four major seas in China, which is divided into two parts: North Yellow Sea and South Yellow Sea. The southern Yellow Sea takes the connection of Chengshan Head to North Korea Paleoepai Island at the east end of the Jiaodong Peninsula of China and the northern Yellow Sea, To the front line of Jeju Island and the East China Sea; it borders on the land of Shandong and North Jiangsu in the west, and covers an area of about 302,000 square kilometers in the east with the area of about 302,000 square kilometers. In the early 1960s, the marine geological survey teams of various departments successively carried out different degrees (Including heavy, magnetic, seismic, water depth, seabed topography, sediment, island survey), the features of regional tectonic contours, geophysical fields and geological structures have been basically ascertained and hundreds of Local structure, and has been drilled 11 (Ministry of Geology and Mineral Resources 7, 4 foreign companies), but it is so far the only Chinese sea area without oil and gas in the sea looking for oil and gas? How to find oil features and directions These issues are still of concern, I think it deserves further exploration.First, the deposition of the South Yellow Sea - tectonic evolution history To understand the potential of this area to find oil and gas, we must first study the sedimentary entities and the environment causing the entity and Evolution of the geological background of the South Yellow Sea with its neighboring areas of the Soviet Union and the Soviet Union, from the geological point of view is that after several “vicissitudes.” Broadly speaking, can be grouped into four sedimentary - tectonic stage of development: 1. Sinian - Stages of development in the fold platform system