下扬子区中新生代沿江盆地群的盆地结构与沉积特征

徐曦; 朱晓颖; 单希鹏; 肖梦楚; 孙连浦; 高顺莉

doi:10.11781/sysydz201803303

下扬子区中新生代沿江盆地群的盆地结构与沉积特征

doi: 10.11781/sysydz201803303

1.
中国国土资源航空物探遥感中心, 北京 100083
2. 同济大学海洋与地球科学学院, 上海 200092
3. 华夏吉泰(北京)科技有限公司, 北京 100015
4. 中海石油(中国)有限公司上海分公司, 上海 200030

基金项目: 国家科技重大专项项目（2011ZX05023-003）资助。

详细信息

作者简介:
徐曦(1986-),男,博士,工程师,从事盆地构造分析与油气评价研究。E-mail:winbreak@163.com。

通讯作者:
朱晓颖(1977-),女,博士,高级工程师,从事含油气盆地构造分析。E-mail:zhuxycugb@163.com。

中图分类号: TE121.2
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出版历程
- 收稿日期: 2017-07-04
- 修回日期: 2018-03-28
- 刊出日期: 2018-05-28

Structure and sedimentary characteristics of the Meso-Cenozoic basin group along the Yangtze River in the Lower Yangtze region

1.
China Aero Geophysical Survey and Remote Sensing Center for Land and Resources, Beijing 100083, China
2. School of Ocean and Earth Science, Tongji University, Shanghai 200092, China
3. Sino Getech(Beijing) Science & Technology Co., Ltd., Beijing 100015, China
4. Shanghai Branch of CNOOC China Ltd., Shanghai 200030, China

摘要

摘要: 下扬子沿江盆地群是下扬子中新生代含油气盆地的重要组成部分，也是认识中国东部中新生代盆地结构与构造—沉积演化的重要窗口。在长江中下游地区，自西向东，分布着鄱阳盆地、潜山盆地、望江盆地、全椒盆地、无为盆地、句容—南陵盆地、常州—宣城盆地、溧阳盆地和平湖盆地9个相对独立的沉积盆地，在平面上组成了一个盆地体系或盆地群，可称之为下扬子沿江盆地群。盆地沉积充填过程主要为晚白垩世—古近纪断陷期与新近纪—第四纪拗陷期2个阶段。盆地断陷期主要以河湖相与三角洲相沉积为主，而拗陷期主要以河流相沉积为主。下扬子沿江地区在渐新世末期形成统一的断陷盆地体系，于新近纪形成统一的拗陷盆地体系。由于新近纪差异变形，各盆地地层差异剥蚀，最终形成现今的沉积盆地地质面貌。
- 盆地结构 /
- 沉积特征 /
- 沿江盆地群 /
- 下扬子区
Abstract: The basin group along the Yangtze River is an important part of the Meso-Cenozoic petroliferous basins in the Lower Yangtze region, which is also an important window for the study of the structure and tectono-sedimentary evolution of the Meso-Cenozoic basins in East China. There are nine relatively independent faulted basins from west to east in the Yangtze River's middle and lower reaches, including Poyang, Qianshan, Wanjiang, Quanjiao, Wuwei, Jurong-Nanling, Changzhou-Xuancheng, Liyang and Pinghu basins, which comprise a basin system or group in the plane, named the Lower Yangtze basin group. Sedimentary filling in the basins was divided into two stages including faulting from the Late Cretaceous to the Paleogene, and depression from the Neogene to the Quaternary. The former stage is characterized by the sedimentation of fluviolacustrine and delta facies, while the latter stage is marked by the deposition of fluvial facies. The fault basin system formed in the Late Oligocene, and a unified depression system formed in the Neogene along the Yangtze River. Due to the Neogene differential deformation, the basinal strata were differentially denuded, forming the modern geological setting of the sedimentary basins.
- basin structure /
- sedimentary characteristics /
- basin group along the Yangtze River /
- Lower Yangtze region

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