摘要
通过对北京清水河流域灵山、洪水口两个古泥石流台地堆积物质样品的热释光研究,测定了古泥石流剖面各样品的热释光年龄。两个古泥石流剖面的年龄均随深度增加而增大,泥石流堆积物质层位越深,受到的环境辐射剂量则越大。剖面U、Th和K的含量随深度的变化趋势与年剂量随深度的变化趋势基本一致,Th含量随深度的变化比U、K含量随深度的变化离散。
The thermoluminescence age of the samples for ancient debris flow terraces material of Lingshan and Hongshuikou,which are in Qingshui River Basin of Beijing,was studied using the thermo luminescence technology.The age increases with the increasing depth of two ancient debris flow profile,and the deeper debris flow deposits material the more of the environmental radiation dose is.The trend with depth of U,Th and K contents and annual dose is consistency.And the change with depth of Th content is more discrete than that of U,K contents.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2012年第B09期736-740,共5页
Atomic Energy Science and Technology
基金
北京市自然科学基金资助项目(8102013)
国家自然科学基金资助项目(40871017)
北京市自然科学基金重点项目B类资助项目(KZ201210028034)
关键词
清水河流域
古泥石流
热释光测年
Qingshui River Basin
ancient debris flow
thermo luminescence dating
