| 西藏札达盆地上新世托林组剖面环境变化记录 |
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| 关键词:Tibet Zanda Basin Tuolin Formation environmental change |
| 基金项目:国家自然科学基金项目(编号:40572134); 中国地质调查局项目“青藏高原第三纪重点古湖泊环境演变序列”(编号:200313000066) |
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| 摘要: |
| Records of Environmental Change in Pliocene along Tuolin Formation in Zanda Basin, Tibet |
| Based on an analysis of such measured data of environmental proxies as sporopollen,grain size,magnetic susceptibility,carbonate content,soluble salts and ESR dating,It is held that Tuolin section contains abundant information of environmental changes from 5.40 Ma to 4.40 Ma.During 5.24～4.72 Ma,the climate was warm and dry,and the forest vegetation consisted of needle leaf and broadleaf veld;during 4.72～4.67 Ma,the river flow increased,the climate was warm and wet,and the vegetation comprised temperate forest and veld;during 4.67～4.40 Ma,the climate became more and more warm and wet,and the vegetation was composed of warm temperate deciduous and broadleaf veld. |
| YU Jia,LUO Peng,HAN Jian-en,MENG Qing-wei,LÜ Rong-ping,MENG Xian-gang,ZHU Da-gang,SHAO Zhao-gang.2007.Records of Environmental Change in Pliocene along Tuolin Formation in Zanda Basin, Tibet[J].Acta Geoscientica Sinica,28(4):341-348. |
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