Shallow Braided Deltaic System in Enping Formation of Huizhou Depression, Pearl River Mouth
详细信息
- 责任者：Guo Qiaozhen (Exploration And Development Research Institute ; Xinjiang Oilfield Company ; Karamay 834000 ; China) ; Chen Feng
- 刊名：Marine Geology & Quaternary Geology
- 出版年：2013
- 卷期：33(1)
- 关键词：三角洲沉积作用 ; deltaic sedimentation ; 珠江口盆地 ; Zhujiangkou Basin
- 页码：p.25-32
- 图表：illus., 15 refs.
- 分类号：0803
- issnNo：ISSN0256-1492
- isbnNo：CN37-1117/P
摘要
Shallow lacustrine deposits are widely distributed in the Enping Formation of the Huizhou depression of the Pearl River Mouth Basin,and has long been considered as a kind of infilling of a faulted basin.Through the study of lithology,geophysical responses,paleontology,geochemical proxies,and grain size distribution,this paper confirms that a special delta,shallow braided river delta,was developed in the Enping Formation of the Huizhou depression in a broad shallow flat lake,with sufficient terrigenous deposits.And this system is characterized by a well-developed delta plain,an undeveloped coarsening-upwards sequence of a mouth bar,and a well-developed braided stream.Depositional features of shallow braided delta are widely observed,such as the lacustrine deposits formed in the fault-sag transition stage,wide-spread thin coal seam,high sedimentation rate,widely distributed sand body,and coarse deposits in the research area,totally different with the depositional features of the infilling deposits in a faulted lake.The new model may help exploration in the Eogene of the Huizhou depression.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |