| 摘要: |
| 对于海相沉积盆地而言,在一个三级海平面变化周期内形成的层序,具有全球可对比性的等时地层单元,跨时约0.3～3M a。在三维高分辨率地震、岩心和测井解释资料基础之上,通过岩石地层旋回特征、可容空间以及层序地层关键界面识别,将珠江口盆地渐新世晚期的珠海组二段分为S1和S2两个三级层序。由于坳陷处于浅海陆棚环境,每个层序中的低水位体系域不发育,局部以受断层控制的水下峡谷充填为特征。 |
| 关键词: 珠江口盆地 构造层序 Fischer曲线 层序地层学 |
| DOI： |
| 附件 |
| 投稿时间：2001-04-24 |
| 基金项目: |
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| Sequence stratigraphy of shallow-marine shelf environments |
| LIU Hao, WANG Ying-min, WANG Yuan, ZHANG Shao-nan |
(1. Centre for Basin Research, China University of Petroleum, Beijing 102249, China;
2. Department of Petroleum, Chengdu University of Technology, Chengdu 610059, Sichuan, China) |
| Abstract: |
| The depositional sequences spanning about 0.3-3 Ma formed within the third-order cycles of eustatic changes in a marine basin are thought to be comparable on a global scale. The Zhujiang River mouth basin studied here is a marginal ex tensional basin in which a succession of vertically cy clic siliciclastic sediments laid dow n. The second member of the late Oligocene Zhuhai Formation may be further divided,on the basis of the three-dimensional high-resolution seismic section, drilling core and well logs data in integration with the recog nition of stratig raphic cy cles, accom modation spaces and key boundaries, into two third-order sequences:S1 and S2. These sequences are commonly lack in the low stand systems tract and locally filled with faultconfined submarine canyon sediments. |
| Key words: Zhujiang River mouth basin tectonic sequence Fischer curve sequence stratig raphy |
