IMHE OpenIR  > 成都山地所知识仓储(2009年以前)
Alternative TitleGarz Loess and the Evolution of the Cryosphere on the Tibetan Plateau
方小敏1; 陈富斌2; 施雅风3; 李吉均1
Corresponding Author方小敏
Source Publication冰川冻土
Other Abstract 逐样系统交变退磁磁性测量表明,86m的甘孜黄土剖面形成于约81.84×10aBP前。剖面中黄土石英砂类型分析揭示出至少约81.84×10aBP以前,高原已进入冰冻圈,并且很快于约76×104aBP前冰川规模达到最大,并持续至约53×10aBP前,倒数第二次冰期时冰川规模次之,然后冰川规模明显减少。同时揭示出大气环流和环境在约81.84×104,60×10和17.8×10aBP前发生过较明显的改变或调整与增强,它们是青藏高原隆起阶段性环境突变效应的产物 
; Magnetic polarity dating of a 86 m loess section at Garze on the southeastern Tibetan Plateau demonstrates that the bottom of the section was formed 818.4 ka BP. Analysis of various quartz sands in the section indicates that the plateau uplifted above snow line and began to develop glaciers at least 818.4 ka BP. ago. Soon late (c. 760 ka BP), glaciers reached their maximum, which are also largest in the scale during 818.4 ka BP., and may persist to about 530 ka BP. The second largest glaciation developed during the penultimate. Since the penultimate, the scale of glaciers has decreased greatly. The analysis also suggests that air circulation and environment occurred sharp changes or adjustments and enhancement at about 818.4 ka BP, 655 ka BP and 175 ka BP. They might be the results of accompanied environmental abrupt changes at some critical heights of the plateau with the sudden uplift. 
Keyword甘孜黄土 青藏高原 形成年代 最大冰期
Subject AreaP343.6
Indexed ByCSCD ; 北大中文核心
Funding Organization国家教委博士点基金和国家“八·五”攀登计划青藏项目
Citation statistics
Cited Times:7[CSCD]   [CSCD Record]
Document Type期刊论文
Recommended Citation
GB/T 7714
方小敏,陈富斌,施雅风,等. 甘孜黄土与青藏高原冰冻圈演化[J]. 冰川冻土,1996,18(3):193-200.
APA 方小敏,陈富斌,施雅风,&李吉均.(1996).甘孜黄土与青藏高原冰冻圈演化.冰川冻土,18(3),193-200.
MLA 方小敏,et al."甘孜黄土与青藏高原冰冻圈演化".冰川冻土 18.3(1996):193-200.
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