New Understanding of Delta Depositional Model
详细信息
- 责任者：Jin Zhenkui (Key Reservoir Laboratory ; China University of Petroleum ; CNPC ; Beijing 102200 ; China) ; He Miao
- 刊名：Xinjiang Petroleum Geology
- 出版年：2011
- 卷期：32(5)
- 关键词：三角洲 ; deltas ; 沉积相模式 ; sedimentary facies model
- 页码：p.443-446
- 图表：2 illus., 12 refs.
- 分类号：0803
- 出版序号：294
- issnNo：ISSN1001-3873
- isbnNo：CN65-1107/TE
摘要
Through flume experiment and investigation of modern deltas, it is found that in front delta, underwater distributary channels are not formed, the distributary channels of delta plain disappear immediately once extending to the lake (sea) level; front delta sand bodies are usually sheet-shaped and fan-shaped, instead of ribbon shaped. The study suggests that depositional model of fan deltas differs widely from that of river deltas. On alluvial fans and fan delta plain develop two types of topography units: channel and inter-channel, both of which are sandy-conglomeratic deposits. There is not environment for shale or mudstone deposition.