| 一种事件沉积的标志——陆相流水波痕 |
| |
| 引用本文： | 蔡雄飞,顾延生,李长安.一种事件沉积的标志——陆相流水波痕[J].沉积与特提斯地质,1998,18(4):44-48. |
| |
| 作者姓名： | 蔡雄飞 顾延生 李长安 |
| |
| 作者单位： | 中国地质大学 |
| |
| 摘 要： | 本文从现代洪水事件作用可以形成大片不对称流水波痕入手，“将今论古”，发现古代地层剖面中也有大量水下至水上的沉积旋回序列，每个旋回单元与下伏岩层为突变接触。水下沉积环境富含不对称流水波痕，水上则为富含泥裂，它们系为洪水事件沉积产物。这些洪水事件具有不同的规模和级别，在地学上具有重要意义。
|
| 关 键 词： | 不对称流水波痕 事件沉积 地质意义 |
The continental current ripple marks as an indicator of event deposits |
| |
| Cai Xiongfei,Gu Yansheng,Li Chang''an.The continental current ripple marks as an indicator of event deposits[J].Sedimentary Geology and Tethyan Geology,1998,18(4):44-48. |
| |
| Authors: | Cai Xiongfei Gu Yansheng Li Chang'an |
| |
| Institution: | China University of Geosciences, Wuhan |
| |
| Abstract: | The asymmetrical current ripple marks occur over a wide range of scales in the Meso-zoic and Cenozoic continental fluvial and lacustrine sedimentary environments in China. They may exhibit diverse morphologies:very wide or very narrow,indicating a permanent shallow-water environment or an ephemeral overbank environment.The results of re-search in this paper have disclosed that within the ancient stratigraphic sections,there are many subaerial and subaqueous sedimentary cyclic sequences,each of which show sharp contacts with the underlying strata.The subaerial environments abound in asymmetrical current ripple marks,whereas the subaqueous ones in desiccation cracks.This implies that the current ripple marks resulted from the flood event deposition.These flood events of varying sizes may have important geological implications. |
| |
| Keywords: | asymmetrical current ripple mark event deposit geological implication |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《沉积与特提斯地质》浏览原始摘要信息 |
| 点击此处可从《沉积与特提斯地质》下载免费的PDF全文 |
