毛乌素沙漠东南缘滴哨沟湾剖面DGS1层段粒度特征及其指示的全新世气候变化
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舒培仙, 李保生, 牛东风, 王丰年, 温小浩, 司月君, 陈琼
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Climate Variations Recorded by the Grain-size from the DGS1 Segment in the Southeast of China′s Mu Us Desert During the Holocene
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Peixian Shu, Baosheng Li, Dongfeng Niu, Fengnian Wang, Xiaohao Wen, Yuejun Si, Qiong Chen
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表2 DGS1层段各沉积相粒度参数特征分布 |
Table 2 Grain size characteristic parameters in the DGS1 segment of each sedimentary facies |
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沉积相(样品数) | 特征参数 | Mz(?) | σ1(?) | SK1 | KG | 流动沙丘砂(37) | 平均值 | 2.55 | 0.97 | 0.29 | 1.43 | 范围 | 2.21~3.36 | 0.51~1.68 | 0.01~0.45 | 0.94~1.70 | 固定半固定沙丘砂(22) | 平均值 | 3.89 | 1.76 | 0.32 | 1.03 | 范围 | 2.27~5.12 | 0.53~2.51 | 0.02~0.51 | 0. 92~1.24 | 古土壤(25) | 平均值 | 2.58 | 1.00 | 0.34 | 1.42 | 范围 | 2.4~2.87 | 0.81~1.25 | 0.23~0.43 | 1.28~1.61 | 次生黄土(19) | 平均值 | 4.58 | 1.46 | 0.36 | 1.44 | 范围 | 4.25~5.27 | 1.15~2.10 | 0.22~0.38 | 1.22~1.51 | 湖沼相(111) | 平均值 | 4.28 | 2.13 | 0.32 | 1.13 | 范围 | 2.33~6.38 | 0.81~3.25 | 0.09~0.53 | 0.65~1.80 | 泥炭(20) | 平均值 | 2.54 | 0.71 | 0.14 | 1.07 | 范围 | 2.33~3.47 | 0.53~1.69 | 0.03~0.51 | 0.94~1.74 | 全剖面(234) | 平均值 | 3.67 | 1.62 | 0.31 | 1.22 | 范围 | 2.21~6.38 | 0.52~3.25 | 0.01~0.53 | 0.65~1.80 |
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