云南东川泥得坪台地热释光测年研究  

Study on Thermoluminescence Dating for Nideping Terrace of Dongchuan,Yunnan Province

作　　者：张彬[1,2,3] 魏明建[1,2,3] 刘超[1,2,3] 张永栋[1,2,3] 周锐[1,2,3] 刘俊新[1,2,3] 刘田田[1,2,3] 赵秋月[1,2,3] 宋波[1,2,3] 

机构地区：[1]首都师范大学光断代实验室,北京100048 [2]资源环境与地理信息系统北京重点实验室,北京100048 [3]国家重点实验室培育基地--城市环境过程与数字模拟,北京100048

出　　处：《原子能科学技术》2013年第4期700-704,共5页Atomic Energy Science and Technology

基　　金：国家自然科学基金资助项目(40871017);北京市自然科学基金资助项目(8012013);北京市自然科学基金重点项目B类资助项目(KZ201210028034);首都师范大学研究生创新基金资助项目

摘　　要：利用热释光断代技术对云南东川泥得坪台地进行地质年代测定,其年代测定结果为9.3～57.1ka,建立了古泥石流台地垂向年龄序列,得到泥得坪古泥石流的时间结构,为恢复古泥石流环境提供年代数据。年代数据显示:泥石流堆积具有不连续性,并出现年代倒转;放射性元素铀、钍、钾可能受当地降雨的影响存在淋溶淀积,年剂量率随深度的增加而增大。The sequence of geological age on Nideping terrace in Dongchuan, Yunnan Province was established by thermoluminescence. The result shows that the age of the terrace is 9.3-57.1 ka. The vertical age of ancient debris flow terraces was established, and the time structure of Nideping mud was received. The age data was provided for the restoration ancient environment of the debris flow. It is shown that the debris flow deposits have discontinuities through age data and exist age inversion. The radioactive elements such as uranium, thorium, potassium may be leaching deposition affected by the presence of local rainfall and the annual dose rate increases with depth.

关 键 词：热释光 古泥石流台地 地质年代 

分 类 号：TL824[核科学技术—核技术及应用]