Timing of Zhangjiajie Sandstone Landforms: Evidence from Fluvial Terraces and Karst Caves
详细信息
- 责任者：Ping Yamin (School of Earth Sciences and Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Yang Guifang
- 刊名：Geological Review
- 出版年：2011
- 卷期：57(1)
- 关键词：砂 ; sand ; 溶洞 ; caves ; 河流阶地 ; river terraces ; 峰林地形 ; needle karst ; 湖南 ; Hunan Province
- 页码：p.118-124
- 图表：6 illus., 1 table, 13 refs.
- 分类号：1400
- issnNo：ISSN0371-5736
- isbnNo：CN11-1952/P
摘要
Zhangjiajie, well-known for its spectacular sandstone landforms, has been the subject of geomorphologists and geologists for decades. Prior to our present study, however, little is known about the timing of these spectacular sandstone landforms. Integrating the geomorphological, sedimentological and geochronological techniques, the correlations between sandstone landforms, fluvial terraces and karst caves have been investigated. The results indicate that three terrace levels are well developed in the Suoxi River, with terrace level T4 locally emerging in the middle Suoxi catchment. Huanglong Cave, a typical karst cave in the study area, can be divided into four vertical levels, with the gravel layer occurring in the topmost level. Sedimentological analysis indicates an allochthonous source for the gravels, which have been formed under a warm and humid environment in Middle Pleistocene.