黄河三门峡至扣马段的阶地序列及成因(英文)

编号 zgly0001585971

文献类型 期刊论文

文献题名 黄河三门峡至扣马段的阶地序列及成因(英文)

作者 苏怀  王均平  潘保田  明庆忠  李琼 

作者单位 CollegeofTourismandGeographySciences  YunnanNormalUniversity  CollegeofResource  EnvironmentandTourism  CapitalNormalUniversity  CollegeofResourcesandEnvironment  LanzhouUniversity 

母体文献 Journal of Geographical Sciences 

年卷期 2009年03期

年份 2009 

分类号 P597.3 

关键词 SanmenGorge  YellowRiverterrace  climaticchanges  surfaceuplift 

文摘内容 Based on field landscape investigations,thermoluminescence(TL),magnetostrati-graphy and loess-paleosol sequence,we found that there are at least four Yellow River ter-races,whose ages are 0.86 Ma,0.62 Ma,0.13 Ma and 0.05 Ma,in Yuxi Fault-Uplift(from Sanmen Gorge to Mengjin) and at least three Yellow River terraces,whose ages are 1.24 Ma,0.25 Ma and 0.05 Ma,in Huabei Fault Depression(from Mengjin to Kouma).All the terraces have a similar structure that several meters of paleosols directly develop on the top of fluvial silt.It shows that the Yellow River incised and consequently abandoned floodplain converted to terrace during the interglacial period.Therefore,there may be a link between the formation of terraces and glacial-interglacial climatic cycles.However,the differences in the Yellow River terrace sequences and ages between Yuxi Fault-Uplift and Huabei Fault Depression indicate that the surface uplift should play an important role in the formation of these terraces.