延怀盆地晚更新世中晚期湖泊发育与气候变化  

LAKE DEVELOPMENT AND CLIMATIC CHANGES, DURING THE MIDDLE AND LATE TIMES OF LATE PLEISTOCENE IN THE YANHUAI BASIN

作　　者：郑荣章[1] 计凤桔[1] 李建平[1] 

机构地区：[1]中国地震局地质研究所

出　　处：《地震地质》2001年第1期55-62,共8页Seismology and Geology

基　　金：中国地震局"九五"重点项目! (编号 950 4 10 0 6)资助

摘　　要：延怀盆地晚更新世发育湖相沉积。根据 4个中晚期湖相层剖面的孢粉分析鉴定结果 ,结合区内晚更新世湖相层的年代测定及湖泊发育的分期 ,恢复了发育于 55～ 2 6和 2 0～ 8kaB .P .时间段内的第 2 ,3期湖泊发育期间的古气候环境。延怀盆地晚更新世中晚期湖泊沉积反映了潮湿气候的特征。There was lake development during late Pleistocene in the Yanhuai basin. On the basis of the results of sporopollen sample ananlyses for four profiles of the middle and late times of late Pleistocene in the basin, combined with dating of the lacustrine stratum and the stages of lake development, we have restored the paleoclimatic environment during 55～26ka B.P. and 20～8ka B.P., during which the second and the third period lacustrine stratum developed. The lake sediment of the middle and late time of late Pleistocene reflects a wet climatic characteristic of the Yanhuai basin.

关 键 词：延怀盆地 孢粉分析 古气候 晚更新世 湖泊沉积 

分 类 号：P532[天文地球—古生物学与地层学]