Sedimentary Facies Constitutional Features and Their Response to Tectonic Control of the Upper Triassic Strata in the Jingmen-Dangyang Basin
详细信息
- 责任者：Chen Liuqin (State Key Laboratory Breeding Base of Nuclear Resources and Environment ; East China Institute of Technology ; Nangchang 330013 ; China) ; Guo Rongtao
- 刊名：Geology in China
- 出版年：2011
- 卷期：38(6)
- 关键词：沉积相 ; sedimentary facies ; 前陆盆地 ; foreland basins ; 湖南 ; Hunan Province
- 页码：p.1446-1453
- 图表：4 illus., 2 tables, 20 refs.
- 分类号：0803
- issnNo：ISSN1000-3657
- isbnNo：CN11-1167/P
摘要
The Upper Triassic Jiuligang Formation and Wanglongtan Formation constitute a classic clastic sedimentary succession deposited in the foredeep belt of the Jingmen-Dangyang basin. Eight lithofacies, six constitutional elements and five depositional systems can be recognized from the outcrop data. Accommodation rates and sequence stacking are mainly controlled by subsidence rates induced by adjacent orogenic belt. Under the warm and humid climate conditions, depositional systems transformed from low energy lakes and swamps to high energy rivers, and each upward fining sequence indicates terrain gradient and sedimentary media energy gradually decreased in an orogenic cycle.