Mud Flow Gully Identification Mark, Type and Depositional Model in the Littoral and Neritic Marine: A Case Study of Dongfang1-1 Gas Field in
详细信息
- 责任者：Li Shengli (China University of Geosciences ; Beijing 100083 ; China) ; Yu Xinghe
- 刊名：Acta Sedimentologica Sinica
- 出版年：2010
- 卷期：28(6)
- 关键词：mudstone ; sandtone ; Yinggehai Basin
- 页码：p.1076-1080
- 图表：5 illus., 10 refs.
- 分类号：0803
- issnNo：ISSN1000-0550
- isbnNo：CN62-1038/P
摘要
In the littoral and neritic sedimentary environment, there is a special kind of gravity-flow deposition, known as mud flow gully. Mudflow gully filled with mudstone mainly positive rhythm, the thickness of the middle, often incised the sand body below it. Vertically, the mud flow gully was often underlain by shoreface or offshore sandbar and beach sand and overlain mostly by offshore mudstone deposition. Mud flow gully mainly formed at the topography transition area of shore and offshore, due to the tectonic events which resulted in slumping of plastic, low diagenetic consolidation fine-grained sediment and forming a gully shape similar to incised valley. Finally, in the gentle terrain, those mud flows began to afflux and generate contiguous cluster distribution characteristics.