IGSNRR OpenIR  > 历年回溯文献
祁连山东段沙沟河阶地的年代与成因
潘保田; 邬光剑; 王义祥; 刘志刚; 管清玉
Source Publication科学通报
2000
Issue24Pages:2669-2675
Keyword青藏高原 祁连山 阶地 构造隆升
Abstract祁连山东段北麓的河流阶地系列是青藏高原阶段性隆升的地貌标志. 通过古地磁、热释光、放射性14C测年及黄土-古土壤地层序列对比, 初步确定祁连山东段沙沟河的5级主要阶地和洪积台地分别形成于约830, 418, 250, 140和10 ka. 阶地特征与成因分析表明, 由基座阶地构成的主要阶地系列是构造上升形成的, 5级主要阶地揭示了祁连山东段最近830 ka存在5次强烈隆升事件, 它们发生的年代大致相当于这5级阶地的形成年代. 同一级阶地内, 由副阶地构成次级阶地系列. 气候变化在其形成上可能起了重要的作用.
Language中文
Document TypeCNKI期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/15465
Collection历年回溯文献
Recommended Citation
GB/T 7714
潘保田,邬光剑,王义祥,等. 祁连山东段沙沟河阶地的年代与成因. 2000.
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