西藏东南部末次冰期早阶段冰川作用及其古气候意义
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谢金明,周尚哲,许刘兵,杨太保
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Glacial activity during early stage of Last Glaciation in southeastern Tibet and its paleoclimate implication
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Jinming XIE,Shangzhe ZHOU,Liubing XU,Taibao YANG
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表1 光释光测年结果
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Table 1 OSL dating results
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样品编号 | 深度/m | U/10-6 | Th/10-6 | K/% | 含水量/%a | 剂量率/(Gy·ka-1) | 测片数b | OD/% | 古剂量/Gy | 年代/ka |
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YL01 | 6.2 | 3.64±0.40 | 23.4±2.3 | 1.46±0.20 | 10±5(2.3) | 3.77±0.22 | 48(0) | 31±3 | 212.5±9.8 | 56.4±4.2 | YL02 | 5.0 | 3.32±0.30 | 19.7±2.0 | 1.31±0.10 | 10±5(3.0) | 3.33±0.19 | 48(1) | 11±1 | 200.6±3.2 | 60.3±3.5 | YL03 | 5.2 | 3.74±0.40 | 20.6±2.1 | 1.73±0.20 | 10±5(2.5) | 3.88±0.22 | 48(1) | 6±1 | 255.5±2.5 | 65.9±3.9 | YL04 | 5.2 | 3.22±0.30 | 22.4±2.2 | 1.56±0.20 | 10±5(1.9) | 3.72±0.21 | 48(13) | 9±3 | 116.0±3.9 | 31.2±2.1 | YLT18 | 3.2 | 3.80±0.38 | 25.3±2.5 | 2.70±0.30 | 5±4(2.9) | 5.30±0.30 | 12(0) | 25±5 | 346.0±25.1 | 65.2±6.0 |
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