六盘山东麓冲积扇晚更新世以来地层结构及其活动性特征

姚子恒, 董晓朋, 杨勇

Stratigraphic architecture and activity of the alluvial fan in the eastern piedmont of the Liupan Mountains since the Late Pleistocene

YAO Zi-Heng, DONG Xiao-Peng, YANG Yong

表1 六盘山东麓冲积扇晚更新世以来事件沉积光释光测年结果

Table 1 Photoluminescence dating results of events since Late Pleistocene in the alluvial fan at the eastern foot of Liupan Mountain

样品号 埋深/m w(U)/10-6 w(Th)/10-6 w(K)/% 实测含水 量/% 测试粒径/ μm 测试 方法 环境剂量率/ (Gy·ka-1) 等效剂量/ (Gy) 年龄/ka BGY-OSL-1 0.9 2.21±0.11 9.38±0.60 1.99±0.34 1.24 4~11 SMAR 3.98±0.42 82.47±5.81 20.71±2.61 BGY-OSL-2 2.1 2.53±0.14 9.90±0.60 1.94±0.78 2.22 4~11 SMAR 4.10±0.71 93.92±4.42 22.92±4.09 SC-OSL-1 10 3.16±0.21 11.00±0.40 1.95±0.99 14.00 4~11 SMAR 3.78±0.75 163.63±11.62 43.33±9.13