Sedimentary Environment Analysis and Regional Comparison of Wuqiangxi Formation in Northwestern Hunan Province
详细信息
- 责任者：Luo Lai (Hunan Institute of Geological Survey ; Changsha 411016 ; China) ; Sun Haiqing
- 刊名：Geology and Mineral Resources of South China
- 出版年：2013
- 卷期：29(3)
- 关键词：沉积环境 ; sedimentary environment ; 湖南 ; Hunan Province
- 页码：p.183-191
- 图表：7 illus., 1 table, 18 refs.
- 分类号：0803
- issnNo：ISSN1007-3701
- isbnNo：CN42-1417/P
摘要
In this paper,lithologic characteristics,sedimentary facies and paleoenvironment of Wuqiangxi Formation,Guzhang area,Northwestern Hunan province are researched through detailed field and laboratory observations.The results show that,the fast transient regression was happened in later Tongtawan stage,and then the sea level rise slowly begin at earlier Wuqiangxi stage,and formed three plot discontinuities of fluvial facies,river plain facies and delta front facies from bottom to the top at about 800 Ma.And to the northwestern side of Yangtze ancient continent the age of strata become newer which in turn overlies and got into the"wedge formation".Stratigraphic correlation shows that Zhangjiawan Formation of adjacent area and Wuqiangxi Formation are deposited in the same sedimentary system inroughly the same period,and sediments reflect that paleocurrent main direction from northwest to southeast,water gradually deepened from northwest to southeast.
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