High lake levels on Alxa Plateau during the Late Quaternary  

作　　者：WANG NaiAng LI ZhuoLun CHENG HongYi LI Yu HUANG YinZhou 

机构地区：[1]College of Earth and Environmental Sciences, Center for Hydrologic Cycle and Water Resources in Arid Region, Lanzhou University, Lanzhou730000, China

出　　处：《Chinese Science Bulletin》2011年第17期1799-1808,共10页

基　　金：supported by the National Natural Science Foundation of China (50879033,41001116 and 40901021);the Specialized Research Fund for the Doctoral Program of Higher Education (SRFD,20090211110025 and 200807301031);the Fundamental Research Funds for the Central Universities (lzujbky-2010-221)

摘　　要：Field investigations including lake shoreline measurement and 14 C chronology have been carried out on the Alxa Plateau to better understand the formation and evolution of the high lake levels in northwest China during the late Pleistocene.Comprehensive field investigations show that there are at least ten shorelines at different elevations at Juyan Lake,at least four on the northwest side of the Jilantai Salt Lake,and nine shorelines and one terrace on the northeast margin of Zhuye Lake.Stratigraphic correlations and chronological evidence indicate that the paleo-lakes have the highest lake levels in Marine Isotope Stage (MIS) 3.Though the optically stimulated luminescence (OSL) results which have been reported by some scholars do not support this view,the fact that the paleo-lakes have the highest lake levels in MIS 3 can not be denied.Differences between OSL and 14 C results from this work might indicate that high lake levels existed on the Alxa Plateau during two different periods.It also suggests that the high lake levels may exist in both MIS 5 and early MIS 3.This paper also provides the basic hydrological information for further water resources research in this arid region.Field investigations including lake shoreline measurement and ^14C chronology have been carried out on the Alxa Plateau to better understand the formation and evolution of the high lake levels in northwest China during the late Pleistocene. Comprehensive field investigations show that there are at least ten shorelines at different elevations at Juyan Lake, at least four on the northwest side of the Jilantai Salt Lake, and nine shorelines and one terrace on the northeast margin of Zhuye Lake. Stratigraphic correla- tions and chronological evidence indicate that the paleo-lakes have the highest lake levels in Marine Isotope Stage （MIS） 3. Though the optically stimulated luminescence （OSL） results which have been reported by some scholars do not support this view, the fact that the paleo-lakes have the highest lake levels in MIS 3 can not be denied. Differences between OSL and 14C results from this work might indicate that high lake levels existed on the Alxa Plateau during two different periods. It also suggests that the high lake levels may exist in both MIS 5 and early MIS 3. This paper also provides the basic hydrological information for further water resources research in this add region.

关 键 词：阿拉善高原 高湖面 晚第四纪 MIS系统 中国西北地区 湖泊水位 更新世晚期 吉兰泰盐湖 

分 类 号：P343.3[天文地球—水文科学] X171[天文地球—地球物理学]