| 吐鲁番盆地古近纪和新近纪的气候变化 |
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| 引用本文： | 张西娟,程捷,王海芝,于文洋.吐鲁番盆地古近纪和新近纪的气候变化[J].地质力学学报,2004,10(4):319-326. |
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| 作者姓名： | 张西娟 程捷 王海芝 于文洋 |
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| 作者单位： | 1. 中国地质科学院地质力学研究所, 北京 100081; |
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| 摘 要： | 新疆吐鲁番盆地的连木沁剖面古近系与新近系的沉积厚度约1770m,是研究吐鲁番盆地这一时段古气候的良好载体。通过对连木沁剖面沉积物中常量元素地球化学分析,表明吐鲁番盆地在晚古新世阶段和晚始新世阶段,气候炎热湿润,但后者波动比较频繁。在渐新世,气候温暖干旱。中新世的气候变化明显可分为两个阶段,早期气候炎热潮湿,而晚期阶段温暖干旱。到上新世,气候显著干旱化。
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| 关 键 词： | 古气候 地球化学 古近纪 新近纪 吐鲁番盆地 |
| 文章编号： | 1006-6616(2004)04-0319-08 |
| 收稿时间： | 2004/8/2 0:00:00 |
| 修稿时间： | 2004年8月2日 |
PALEOGENE AND NEOGENE PALEOCLIMATIC CHANGES IN THE TURPAN BASIN,NORTHWEST CHINA |
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| ZHANG Xi-juan,CHENG Jie,WANG Hai-zhi and YU Wen-yang.PALEOGENE AND NEOGENE PALEOCLIMATIC CHANGES IN THE TURPAN BASIN,NORTHWEST CHINA[J].Journal of Geomechanics,2004,10(4):319-326. |
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| Authors: | ZHANG Xi-juan CHENG Jie WANG Hai-zhi and YU Wen-yang |
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| Institution: | 1. Institute of Geomechanics, Chinese Academy of Geosciences, Beijing 100083;2. China University of Geosciences, Beijing 100083;3. Beijing Geological Institute, Beijing 100011;4. Institute of Remote Sensing Application, Chinese Academy of Sciences, Beijing 100101 |
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| Abstract: | The Paleogene and Neogene at the Lamjin section in the Turpan basin, Xinjiang, have a sedimentary thickness of~1779 m.This section is a good carrier for the study of the paleoclimate in this period in the basin.Major element geochemical analysis of the sediments in the section indicates the following:in the late Paleocene, the climate was warm and wet;in the late Eocene, it was also warm, but dry and wet alternately;in the Oligocene, it was warm and dry;in the Miocene, the climate was divided into two phases, being warm and wet in the early phase and cold and dry in the late phase;in the Pliocene, it was obviously dry. |
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| Keywords: | paleoclimate geochemistry Paleogene Neogene Turpan basin |
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