|
|||||
|
|
| 琼东南盆地古近系沉降特征 | |
| 引用本文： | 蔡佳, 王华, 崔敏. 琼东南盆地古近系沉降特征[J]. 海洋地质前沿, 2014, 30(4): 14-19,27. |
| 作者姓名： | 蔡佳 王华 崔敏 |
| 作者单位： | 1 中海油研究总院, 北京 100027;; 2 中国地质大学资源学院, 武汉 430074;; 3 中国地质大学(武汉)构造与油气资源教育部重点实验室, 武汉 430074 |
| 基金项目： | 国家自然科学基金“典型断陷富油气凹陷层序构成样式的差异性研究” |
| 摘 要： | 在建立层序地层格架的基础上,对琼东南盆地古近系各个层位沉降史进行了回剥分析。研究表明,琼东南盆地古近系沉降中心不断迁移,沉积中心不断扩大,沉降速率随构造活动程度的变化而发生变化。琼东南盆地的12个凹陷可分为2个沉降梯队,西北及东南部总体上为非沉降区。通过选取各个凹陷中的典型点(最深位置)做出单点上的回剥模拟结果可知,琼东南盆地断陷期的3幕表现明显,构造沉降所占的比例逐渐减少,整体上琼东南盆地中央凹陷带东南区的沉降大于西北区。 |
| 关 键 词： | 古近系 沉降史 沉降速率 琼东南盆地 |
| 收稿时间： | 2014-01-14 |
SUBSIDENCE CHARACTER OF THE PALEOGENE QIONGDONGNAN BASIN |
|
| CAI Jia, WANG Hua, CUI Min. SUBSIDENCE CHARACTER OF THE PALEOGENE QIONGDONGNAN BASIN[J]. Marine Geology Frontiers, 2014, 30(4): 14-19,27. | |
| Authors: | CAI Jia WANG Hua CUI Min |
| Affiliation: | 1 CNOOC Research institute, Beijing 100027, China;; 2 Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, China;; 3 Key Laboratory of Tectonics and Petroleum Resources, China University of Geosciences Wuhan, Ministry of Education, Wuhan 430074, China |
| Abstract: | Back-stripping analysis for Paleogene subsidence history in the Qiongdongnan Basin is made based on the sequence stratigraphic framework. The result shows that the center of subsidence was shifting for different depositional stage, and the rate of settlement changing with the intensity of tectonic activities. Two echelon of settlement are identified in the Qiongdongnan Basin, but the north-west and south-east parts are non-settlement areas. From the result of back-stripping simulation in the deepest position, there are three major faulting episodes in the basin, and the rate of subsidence is decreasing one after another. The subsidence in the south-east part of the central depression zone is faster than that in the north-west part. |
| Keywords: | Paleogene subsidence history subsidence rate Qiongdongnan Basin |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《海洋地质前沿》浏览原始摘要信息 | |
| 点击此处可从《海洋地质前沿》下载全文 | |