黔中乌当盆地阶地沉积特征及其对盆地演化的指示
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蒋玺, 陈文奇, 宁凡, 郑军, 罗维均, 周涌
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Sediment characteristics of terraces in Wudang Basin and their implications on basin evolution
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JIANG Xi, CHEN Wenqi, NING Fan, ZHENG Jun, LOU Weijun, ZHOU Yong
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表4 乌当盆地阶地沉积物的OSL测年结果
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Tab. 4 OSL dating results of terrace sediments in Wudang Basin
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样品
编号 | 埋深
(m) | U-238
(Bg/Kg) | Th-232
(Bg/Kg) | K-40
(Bg/Kg) | 含水量
(%) | 环境剂量率
(Gy/ka) | 等效剂量
(Gy) | 年龄
(ka) | | LW-1 | 1.6 | 39.5±5.8 | 29.2±0.4 | 231.6±5.1 | 17 | 2.1±0.2 | 48.7±2.1 | 23.6±1.8 | | LW-2 | 0.7 | 55.1±7.2 | 39.5±0.5 | 282.3±6.2 | 18 | 2.7±0.2 | 71.2±1.7 | 26.7±1.8 | | LK-1 | 4.8 | 40.9±6.7 | 31.6±0.4 | 306.6±6.5 | 26 | 2.1±0.1 | 362.9±19.7 | 177.4±17.0 | | LK-2 | 1.8 | 48.1±7.1 | 41.1±0.5 | 302.0±6.4 | 15 | 2.6±0.2 | 301.1±25.1 | 114.0±11.9 | | YDX-1 | 2.3 | 40.7±5.9 | 25.6±0.4 | 102.2±3.4 | 12 | 1.6±0.1 | 138.5±7.0 | 87.6±6.8 |
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