年轻冰川沉积砾石的晒退特征及其对岩石释光埋藏测年的启示
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李阳, 欧先交, 温佳洁, 杨婉宜, 曾兰华, 姚盼, 赖忠平
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Bleaching characteristics of young glacial cobbles and its implications for rock luminescence burial dating
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Yang LI, Xianjiao OU, Jiajie WEN, Wanyi YANG, Lanhua ZENG, Pan YAO, Zhongping LAI
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表2 不同采样点的沉积环境、岩芯晒退良好比例、T02的De值及剂量高估值
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Table 2 Sedimentary environments of different sampling sites， the proportion of well bleached cores， De values of T02 and their overestimations
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| 样品点 | 沉积环境 | 测试砾石/岩芯数量 | 岩芯晒退良好比例 | T02岩片De（MAM） | 预期 | 剂量高估 |
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| IRSL50/Gy | post-IR IRSL225/Gy | De/Gy | IRSL50/Gy | post-IR IRSL225/Gy |
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| YPGC002S | 现代冰河沉积表面 | 11/22 | 45.5% | 4.5±2.8 | 9.3±4.9 | 0 | 3.6±2.8 | 8.1±4.9 | | YPGC003S | 后退碛垄表面 | 9/18 | 50.0% | 6.3±4.0 | 2.8±3.0 | 0 | 5.4±4.0 | 1.6±3.0 | | YPGC001 | 现代后退碛垄间小洼地冰水沉积 | 36/72 | — | 20.1±4.2 | 35±6.8 | ~0 | ~19.2±4.2 | ~33.8±6.7 | | YPGC002 | 现代冰河沉积 | 37/73 | 13.7% | 6.8±2.5 | 6.9±2.8 | ~0 | ~5.9±2.5 | ~5.7±2.8 | | YPGC101 | 小冰期侧碛垄 | 15/29 | 75.9% | 8.2±0.9 | 9.4±4.3 | ~3.0~0.6 | ~4.3±0.9~6.7±0.9 | ~5.2±4.3~7.6±4.3 | | YPGC201 | 小冰期冰水阶地 | 22/44 | 22.7% | 7.5±2.4 | 9.3±3.1 | ~3.0~0.6 | ~3.6±2.4~6.0±2.4 | ~5.1±3.1~7.5±3.1 |
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