| Geochemical Evolution and Environmental Changes of Qinghai—Xizang Plateau Since Late Cenozoic |
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| 引用本文： | 余素华,文启忠,等.Geochemical Evolution and Environmental Changes of Qinghai—Xizang Plateau Since Late Cenozoic[J].中国地球化学学报,1998,17(3):258-264. |
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| 作者姓名： | 余素华 文启忠 |
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| 作者单位： | [1]GuangzhouInstituteofGeochemistry,ChineseAcademyofSciences,Wushan,Guangzhou,510640 [2]GuangzhouInstituteo,ChineseAcademyofSciences,Wushan,Guangzhou,510640 |
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| 摘 要： | Long-and short-term climatic curves were preliminarily established based on the comprehensive analysis of geochemical information since the Late Cenozoic in the Qinghai Xizang(Qinghai-Tibet)Plateau.The curves show that the climate in the plateau was alternatively dry-warm and cold-wet during the period of 30-3.4 Ma when the plateau was not uplifted to an enough altitude and the monsoon was not completely formed either,In the period of 3.4-0.73 Ma.the climate fluctuated between dry-cold and wet-warm when the plateau was rapidly uplifted and the Asian monsoon was consequently formed.Since 0.73 Ma.the climate became even drier when the plateau continuously rose.In the Holocene period.the climate alternatively changed with a complex model of being cool-dry,warm-wet and cold-wet.
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| 关 键 词： | 古气候 环境模式 碳酸盐 青海－西藏高原 新生代 |
Geochemical evolution and environmental changes of Qinghai-Xizang Plateau since Late Cenozoic |
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| Yu Suhua,Wen Qizhong,Wang Junda.Geochemical evolution and environmental changes of Qinghai-Xizang Plateau since Late Cenozoic[J].Chinese Journal of Geochemistry,1998,17(3):258-264. |
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| Authors: | Yu Suhua Wen Qizhong Wang Junda |
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| Institution: | (1) Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Wushan, 510640 Guangzhou |
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| Abstract: | Long- and short-term climatic curves were preliminarily established based on the comprehensive analysis of geochemical information
since the Late Cenozoic in the Qinghai-Xizang (Qinghai-Tibet) Plateau. The curves show that the climate in the plateau was
alternatively dry-warm and cold-wet during the period of 30-3.4 Ma when the plateau was not uplifted to an enough altitude
and the monsoon was not completely formed either. In the period of 3.4-0.73 Ma, the climate fluctuated between dry-cold and
wet-warm when the plateau was rapidly uplifted and the Asian monsoon was consequently formed. Since 0.73 Ma, the climate became
even drier when the plateau continuously rose. In the Holocene period, the climate alternatively changed with a complex model
of being cool-dry, warm-wet and cold-wet. |
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| Keywords: | Paleoclimate environment pattern Late Cenozoic Qinghai-Xizang Plateau |
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