| 柴西第四纪湖泊冰水沉积的发现及意义 |
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| 引用本文： | 钟建华,李浩,黄立功,温志峰,郭泽清,王海侨,李勇.柴西第四纪湖泊冰水沉积的发现及意义[J].沉积学报,2005,23(2):284-290. |
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| 作者姓名： | 钟建华 李浩 黄立功 温志峰 郭泽清 王海侨 李勇 |
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| 作者单位： | 1.石油大学(华东)资信学院,山东东营 257061; |
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| 基金项目： | 高等学校博士学科点专项科研项目
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CNPC创新基金 |
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| 摘 要： | 柴达木盆地西部的茫崖坳陷发育了第四纪湖泊冰水沉积,其特征是灰绿、黄褐色页岩和泥岩中含大量的冰水滴石。滴石最大粒径可达4cm×12cm,成分复杂,有火山岩、变质岩及沉积岩。孢粉分析表明,其形成时代为第四纪,极有可能为更新世,与我国西部的第四纪冰期形成时代相同,但具体期次尚不能确定。柴西茫崖坳陷第四纪冰水沉积证据充分,对于研究我国第四纪冰期及青藏高原的形成演化、古气候、古地理具有重要意义。另外,第四纪冰水沉积充分说明在第四纪冰期青藏高原没有被整个大冰盖所覆盖。
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| 关 键 词： | 滴石 冰水沉积 第四纪 柴达木 |
| 文章编号： | 1000-0550（2005）02-0284-07 |
| 收稿时间： | 2004-05-26 |
| 修稿时间： | 2004-11-02 |
Quaternary Lacustrine Outwash: Significance to the Western Qaidam, China |
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| ZHONG Jian-hua,LI Hao,HUANG Li-gong,WEN Zhi-feng,GUO Ze-qing,WANG Hai-qiao,LI Yong.Quaternary Lacustrine Outwash: Significance to the Western Qaidam, China[J].Acta Sedimentologica Sinica,2005,23(2):284-290. |
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| Authors: | ZHONG Jian-hua LI Hao HUANG Li-gong WEN Zhi-feng GUO Ze-qing WANG Hai-qiao LI Yong |
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| Institution: | 1.Institute of Earth Information and Resources, University of Petroleum (Eastern China), Dongying, Shandong 257061;2.Guangzhou Institute of Geochemistry, Chinese Academy of Science, Guangzhou 510640 |
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| Abstract: | The Quaternary outwash, characterized by the drip stone bounded by the gray and yellow shale and mud-stone, is discovered in theMang'ai depression of Qaidam basin. The drip stone is up to 4 cm ×12 cm with complicated compositions owing to the volcanic, metamorphic and sedimentary origin. The sporo-pollen analysis revealed that it is formed in Quaternary period, most probably Pleistocene epoch, coinciding with the Quaternary glacial epoch of West China although the detailed age is, as yet, uncertain. The strong evidence of outwash existed in theMang'ai dep ression is of great importance to the research on the evolution and paleoclimate, paleogeography of Qingzang plateau of Quaternary glacial epoch of China. Moreover, it reveals that a whole ice cover in the Quaternary does not cover the Qingzang plateau |
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| Keywords: | dropstone outwash Quaternary Qaidam |
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