延怀盆地及毗邻地区主要河流低阶地地貌面的年代学研究  

CHRONOLOGICAL RESEARCH OF GEOMORPHIC SURFACE ON LOWER TERRACES OF SEVERAL MAJOR RIVERS IN THE YANHUAI BASIN AND ITS ADJACENT AREAS

作　　者：计凤桔[1] 郑荣章[1] 李建平[1] 尹金辉[1] 

机构地区：[1]中国地震局地质研究所,北京100029

出　　处：《地震地质》2000年第B12期13-18,共6页Seismology and Geology

基　　金：中国地震局"九五"重点项目! (950 4 10 0 6 )资助 ;中国地震局地质研究所论著! 2 0 0 0B0 0 6 0

摘　　要：采用热释光 (TL)、光释光 (IRSL)、碳十四 (14 C)和孢粉分析等测年方法对延怀盆地及毗邻地区几条主要河流的低阶地进行了年代学综合研究 ,测定了低阶地沉积物的堆积年龄 ,估计了低阶地地貌面的形成时代 ,初步探讨了低阶地地貌面的成因。结果表明 ,用这些方法测定的河流低阶地年龄 。A comprehensive study of chronology for the lower terraces along several major rivers in the Yanhuai basin and its adjacent areas is made by TL,IRSL and 14C dating as well as the Spore-pollen analysis method. The deposited ages of sediments heve been dated and the formation times of the geomorphic surfases for these lower terraces are estimated. The results show that the lower terraces in this region are associated with the regional motion and the climate conditions since late Pleistocene time.

关 键 词：阶地 年代学 地貌 盆地 毗邻地区 形成时代 测年 河流 初步探讨 

分 类 号：P534.63[天文地球—第四纪地质学] P931[天文地球—古生物学与地层学]