| Eolian origin of the Miocene loess-soil sequence at Qin’an, China: Evidence of quartz morphology and quartz grain-size |
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| 引用本文： | LIU Jinfeng GUO Zhengtang QIAO Yansong HAO Qingzheng YUAN Baoyin. Eolian origin of the Miocene loess-soil sequence at Qin’an, China: Evidence of quartz morphology and quartz grain-size[J]. 科学通报(英文版), 2006, 51(1): 117-120. DOI: 10.1007/s11434-005-0811-8 |
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| 作者姓名： | LIU Jinfeng GUO Zhengtang QIAO Yansong HAO Qingzheng YUAN Baoyin |
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| 作者单位： | [1]Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China [2]SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi＇an 710075, China [3]Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China |
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| 基金项目： | Acknowledgements Liu Jinfeng thanks Xiao Jule, Wei Lanying, Peng Shuzhen, Yan Xin and Yin Qiuzhen for their help and discussion. This work was supported by the National Natural Science Foundation of China （Grant No. 40231001） and the Chinese Academy of Sciences （Grant No. KZCX3-SW- 139）. |
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| 摘 要： | Recent study revealed that the so-called Neogene Gansu System in the western Loess Plateau contains loess-soil sequences of Miocene age. A most complete sequence （QA-I） covers a time interval from ～22 to ～.6.2 Ma BP, consisting of more than 230 visually definable paleosols interbedded with loess layers. A loess-soil sequence of late Miocene-Pliocene age, synchronous with the Hipparian Red Clay in the eastern Loess Plateau, was also recognized, and extends the Miocene sequences into the Pliocene, ～3.5 Ma BP. Recently, Miocene eolian deposits were also reported from the high terraces near Xining.
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| 关 键 词： | 石英 形态 尺寸 中新世 黄土 |
| 收稿时间： | 2005-10-23 |
| 修稿时间： | 2005-10-232005-11-02 |
Eolian origin of the Miocene loess-soil sequence at Qin’an, China: Evidence of quartz morphology and quartz grain-size |
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| Jinfeng Liu,Zhengtang Guo,Yansong Qiao,Qingzheng Hao,Baoyin Yuan. Eolian origin of the Miocene loess-soil sequence at Qin’an, China: Evidence of quartz morphology and quartz grain-size[J]. Chinese science bulletin, 2006, 51(1): 117-120. DOI: 10.1007/s11434-005-0811-8 |
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| Authors: | Jinfeng Liu Zhengtang Guo Yansong Qiao Qingzheng Hao Baoyin Yuan |
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| Affiliation: | (1) Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China;(2) SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710075, China;(3) Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, 100081, China |
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