Discussion on Genesis and Age of Qingshan Formation in Wuhan
详细信息
- 责任者：Mao Xinwu (Hubei Institute of Geological Survey ; Wuhan 430034 ; China) ; He Renliang
- 刊名：Resources Environment & Engineering
- 出版年：2011
- 卷期：25(3)
- 关键词：晚更新世 ; Upper Pleistocene ; 湖北 ; Hubei Province
- 页码：p.177-181
- 图表：9 illus., 1 table, 6 refs.
- 分类号：1400
- issnNo：ISSN1671-1211
- isbnNo：CN42-1736/X
摘要
On the basis of Qingshan profile research data,origin and era of Qingshan Fm are discussed in this paper. The results show grain size composition is the same as sand soil layer, grain size characteristics of clayey silt (silty sand) is the same as clayey silt (silty sand) of modern Yangtze estuary in Qingshan Formation. Size frequency distribution curves of multi-peak form,the cumulative curve of three stages, should be river beach deposition under different hydrodynamic environment. Sand electron microscope scanning shows that Qingshan Formation and surface of sand grain are the main microscopic characteristics of water. Optical stimulated luminescence dating shows that Qingshan Fm formed in the 111.9 ka B.P.