汾渭地堑盆地第四纪中晚期阶段性演化时间序次差异及其构造指示意义（英文）

编号 zgly0001584246

文献类型 期刊论文

文献题名 汾渭地堑盆地第四纪中晚期阶段性演化时间序次差异及其构造指示意义（英文）

作者 胡小猛  周天航  蔡顺 

作者单位 GeographyDepartment  ShanghaiNormalUniversity 

母体文献 Journal of Geographical Sciences 

年卷期 2017年11期

年份 2017 

分类号 P534.63  P542 

关键词 FenweiGraben  lacustrineandalluvialterrace  paleolakeregression  TibetanPlateau 

文摘内容 There are a series of basins in the Fenwei Graben.Field survey found that there took place several paleolake regressions or intensive stream down-incisions in all basins during the Mid-Late Quaternary.The lowest and oldest paleosol/loess units overlying three of the lacustrine terraces or alluvial ones and some paleomagenetism data from the lacustrine sediment indicate that the onset times of three paleolake regressions or intensive stream down-incisions are synchronous with the formation of L9,L6 and L2 respectively in the Weihe Basin,S8,S5 and S1 respectively in the Linfen-Taiyuan-Xingding Basins,and L8,L5 and L1 respectively in the Datong Basin.The difference in the onset time of each lake regressions or intensive stream down-incision in different basins reveals that the farther the basin is from the Tibetan Plateau,the later it took place.Taking these field facts and the former research results in terms of the regional tectonic movement into account,it is inferred that the tectonic movement of the Tibetan Plateau most probably controlled such geomorphological-sedimentary evolution in the graben.