作 者：
赵元杰;刘辉;车高红;王辉;高辰晶;夏训诚
单 位：
中国科学院新疆生态与地理研究所;河北师范大学资源与环境科学学院
摘 要：
荒漠区红柳沙包沉积纹层的年代学研究表明,对于纹层清晰、沉积连续的罗布泊地区红柳沙包,其沉积纹层是一种有效的计年方法;而对于沉积纹层并非全部清晰的塔克拉玛干沙漠南缘地区红柳沙包,需要综合运用210Pb、137Cs和14C等多种测年方法,建立沉积纹层的年代序列。建立的罗布泊红柳沙包沉积纹层年代为1839—2006年,安迪尔故城为1792—2010年,安迪尔牧场为1600—2010年,达玛沟为1590—2010年。研究还表明,210Pb和137Cs测年方法对近百年来形成的红柳沙包沉积纹层计年意义明确,而14C和光释光测年方法不适用于红柳沙包沉积纹层的年代测定。
译 名：
On Age Sequence Establishment Method of Tamarix Cone Sedimentary Veins in Desert Region
作 者：
ZHAO Yuan-jie;LIU Hui;CHE Gao-hong;WANG Hui;GAO Chen-jing;XIA Xun-cheng;Hebei Key Laboratory of Environmental Change and Ecological Construction,College of Resources and Environmental Sciences,Hebei Normal University;Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences;
关键词：
Tamarix cone;;sedimentary vein;;age sequence;;Lop Nor
摘 要：
Chronological researched results on Tamarix cone sedimentary veins in desert region show that,for the Tamarix cone with clear and continuous sedimentary veins in Lop Nor region,the sedimentary veins is an effective dating method; for those without perfectly clear and continuous sedimentary veins in southern region of Taklimakan Desert,the age sequence establishment of sedimentary veins needs to use some dating methods comprehensively such as210 Pb,137Cs,14 C and so on. By means of SPSS 17. 0 software,the correlation coefficient significance test of the three sampling sites was carried out,the results show that between the specific activity of210 Pbex of the sedimentary veins at sampling sites A,B and C and the depth shows significant correlation,in the significance level of 0. 01,the correlation coefficients are- 0. 571,- 0. 718 and0. 718 respectively. The established age sequences of sedimentary veins of Tamarix cone are for Lop Nor from1839 to 2006,for ancient Andier City from 1792 to 2010,for Andier meadow from 1600 to 2010,and for Damagou from 1590 to 1590 respectively. For the Tamarix cone in Lop Nor region,with the continuous and clear sedimentary veins,the time resolutions of the upper section are 56 years with the depth of 0- 1 m,82 years of 1- 2 m,and 66 years of 2- 3 m; For those in the southern region of Taklimakan Desert,without the completely continuous and clear sedimentary veins,they are mean 56 years with the depth of 0- 1 m,82 years of 1- 2 m,66 years of 2- 3 m,68 years of 3- 4 m,and 55 years of 4- 5 m. The methods of210 Pb,137Cs dating are suitable to the Tamarix cone sedimentary vein dating in recent one hundred years,moreover the methods of14 C and OSL dating are not suitable to the Tamarix cone sedimentary vein dating.
