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关于湖南长沙地区附近湘江阶地若干问题的探讨
Alternative TitleAN APPROACH TO SEVERAL QUESTIONS OF XIANGJIANG RIVER TERRACE IN CHANGSHA AREA HUNAN PROVINCE
刘希林
Corresponding Author刘希林
1987-03
Source Publication长沙水电师院学报(自然科学版)
ISSN1006-7140
Issue2Pages:73-79
Other Abstract本文根据阶地的相对高度和沉积韵律将长沙地区湘江阶地分为7—9米、15米、30—35米和50米四级。一级阶地沿湘江和浏阳河呈不规则的条带状分布,区内面积约9平方公里;二级阶地呈北小南大的块体状分布,区内面积约15平方公里;三级阶地呈西南—东北向分布,区内面积约21平方公里;四级阶地呈开口向南的曲尺状分布,区内面积约18平方公里。一、二级阶地为堆积阶地;三、四级阶地为基座阶地。古湘江的摆动变迁、长沙地区的区域上升运动和洞庭湖侵蚀基准面的下降是本区阶地形成的根本原因。据推测,一级阶地形成于全新世;二级阶地形成于晚更新世;三级阶地形成于中更新世晚期;四级阶地形成于中更新世中期或稍早。 
; According to the relative altitude and deposital rhyme of terrace, Xiangjiang River terraces fall into 7-9m, 15m,30-35m and 50m four steps in Changsha district. Terrace 1 is about 9 square km, terrace 2 is about 15 square km , terraec 3 is roughly 21 square km and terrace 4 is roughly 18 square km. Terrace 1 and 2 are constructional terraces. Terrace 3 and 4 are bedrock seated terraces. The swing of past Xiangjïang River, areal rising movement and the sinking of Dongting Lake erosion base level are the basic causes of terrace formation . By inference, terrace 1 is formed in Q4J terrace 2 in Q3, terrace 3 in the later stage of Q2, terrace 4 in the middle stage of Q2 or slightly early.
Keyword湘江阶地 沉积韵律
Language中文
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/10064
Collection成都山地所知识仓储(2009年以前)
Affiliation中国科学院成都地理研究所
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
刘希林. 关于湖南长沙地区附近湘江阶地若干问题的探讨[J]. 长沙水电师院学报(自然科学版),1987(2):73-79.
APA 刘希林.(1987).关于湖南长沙地区附近湘江阶地若干问题的探讨.长沙水电师院学报(自然科学版)(2),73-79.
MLA 刘希林."关于湖南长沙地区附近湘江阶地若干问题的探讨".长沙水电师院学报(自然科学版) .2(1987):73-79.
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