摘要
侏罗系在中国大地构造研究及含油气研究中具有重要地位。根据南黄海盆地东北凹所钻遇地层的岩性组合、孢粉组合特征,确定了该井钻遇地层反映的时代为侏罗纪,证实了南黄海盆地发育侏罗系地层,这对评价南黄海盆地中生界油气资源潜力具有重要意义,预示着黄海海域中生界具有广阔的勘探前景;同时也证实南黄海盆地印支—燕山期为扬子板块与华北板块碰撞背景下形成的前陆盆地。侏罗纪地层时代的确认及构造演化分析是下扬子南黄海及其周边盆地的构造发生、演化研究的桥梁和依据。
The Jurassic is critical important in geotectonic studies and oil-gas researches in China. Based on the newly drilled well S1 in the north-east sag of the northern depression of the South Yellow Sea, this paper analyzed the lithologic associations and the sporo-pollen assemblages of the cores. It is confirmed that target formation is Jurassic. It means that there was a Jurassic sedimentary basin occurred in the South Yellow Sea, which bears great potential of the Mesozoic deposits. It is further confirmed that the South Yellow sea basin was a foreland basin owing to the collision between Yangtze plate and North China plate during the Iindo-Sinian and Yanshan stages. The discovery of the Jurassic strata and tectonic evolution analysis will provide enlightenment for the study of tectonics in the South Yellow Sea and peripheral basins of the Lower Yangzi areas.
出处
《海洋地质前沿》
2015年第4期7-12,共6页
Marine Geology Frontiers
基金
国家科技重大专项"近海中古生界残留盆地特征及油气潜力"(2011ZX05023-03)
关键词
南黄海
侏罗系
前陆盆地
构造演化
the South Yellow Sea
Jurassic strata
foreland basin
tectonic evolution
