渤海海域区前古近纪构造对上古生界—中生界烃源岩的影响

Influence of pre-Paleogene tectonics on Upper Paleozoic-Mesozoic source rocks in Bohai Sea area

周静 吕大炜 陈龙 李增学 刘海燕 郑雪

Zhou Jing Lü Dawei Chen Long Li Zengxue Liu Haiyan Zheng Xue

山东省高校沉积成矿作用与沉积矿产重点实验室(山东科技大学), 山东 青岛 266510 2. 长庆油田分公司 第三采气厂, 内蒙古 乌审旗 017300

Key Laboratory of Depositional Mineralization & Sedimentary Mineral (SDUST), Qingdao, Shandong 266510, China 2. The 3rd Gas Production Plant of Changqing Oilfield Company, Wushengqi, Inner Mongolia 017300, China

渤海湾盆地渤海海域区前古近系可划分为5个构造层,通过分析石炭—二叠系及中生界地层分布,认为渤海海域区地层分布与渤海湾盆地演化有很大关系,具有明显的阶段性和继承性。晚古生代受北部兴蒙洋活动大陆边缘俯冲造山的影响(海西运动)以及多次的海侵作用,造成该区烃源岩发育从北向南逐渐变好;晚古生代末—三叠纪,由于印支运动的影响,烃源岩不是很发育;中生代的燕山运动,该区形成了大量的内陆坳陷湖盆沉积,湖盆中心区形成了大量的优质烃源岩。

The Bohai Sea area can be divided into 5 structural layers. The distribution of Carboniferous, Permian and Mesozoic strata was studied, indicating for close relationship between stratigraphic distribution and basin evolution. Due to the subduction of the continental margin orogeny of the northern Xingmeng ocean activities in the Late Paleozoic (the Hercynian Movement), and influenced by a number of transgression, source rocks became better from north to south gradually. From the Late Paleozoic to Triassic, source rocks became worse because of the Indosinian Movement. The Yanshan Movement during Mesozoic resulted in a large number of inland warped lake deposition in the area and excellent source rocks of large quantity generated in the center of lake basin.

国家油气专项资助项目(XQ-2004-03)

https://doi.org/10.11781/sysydz201302146