中国科学院青海盐湖研究所机构知识库
Advanced  
ISL OpenIR  > 青海盐湖研究所知识仓储  > 期刊论文
题名: Luminescence chronology of aeolian deposits from the Qinghai Lake areain the Northeastern Qinghai-Tibetan Plateau and its palaeoenvironmentalimplications
作者: 刘向军 ;  赖忠平 ;  Yu, LuPeng ;  孙永娟 ;  Madsen, David
刊名: QUATERNARY GEOCHRONOLOGY
出版日期: 2012
卷号: 10, 期号:*, 页码:37-43
关键词: Qinghai Lake ;  Qinghai-Tibetan Plateau ;  Aeolian deposits ;  Optically
英文摘要: Qinghai Lake, on the northeastern Qinghai-Tibetan Plateau, is the largest extant closed-basin lake in China, and has been the subject of numerous palaeoclimatological and palaeoenvironmental studies. In this study, 32 samples of aeolian sand, loess and palaeosol at six sites, and 1 sample of shoreline deposits underlying aeolian deposits were dated using optically stimulated luminescence (OSL). Where available, OSL ages are in agreement with previously published C-14 ages. Our dating results, in combination with previous published ages on aeolian deposits showed that: (1) The oldest aeolian deposits around Qinghai Lake are in excess of 165 ka. (2) Aeolian deposition then began at 14 ka in the Qinghai Lake area. Periods of palaeosol formation occurred at similar to 16.9 ka, similar to 12.2-11 ka, similar to 10-9 ka, similar to 5.2-4 ka, and similar to 3.9-0.7 ka. (3) The accumulation intervals of palaeosols are generally consistent with drilling-core-based environmental change proxies, indicating that palaeosols were formed during wet periods with higher vegetation cover. (4) A depositional hiatus period of similar to 40-50 ka exists between the surface mantle aeolian deposits and underlying gravel deposits. (5) Lake levels during the Holocene did not exceed 3205.2 m elevation (11.8 m above recent lake level of April, 2010). (C) 2012 Elsevier B.V. All rights reserved. Qinghai Lake, on the northeastern Qinghai-Tibetan Plateau, is the largest extant closed-basin lake in China, and has been the subject of numerous palaeoclimatological and palaeoenvironmental studies. In this study, 32 samples of aeolian sand, loess and palaeosol at six sites, and 1 sample of shoreline deposits underlying aeolian deposits were dated using optically stimulated luminescence (OSL). Where available, OSL ages are in agreement with previously published C-14 ages. Our dating results, in combination with previous published ages on aeolian deposits showed that: (1) The oldest aeolian deposits around Qinghai Lake are in excess of 165 ka. (2) Aeolian deposition then began at 14 ka in the Qinghai Lake area. Periods of palaeosol formation occurred at similar to 16.9 ka, similar to 12.2-11 ka, similar to 10-9 ka, similar to 5.2-4 ka, and similar to 3.9-0.7 ka. (3) The accumulation intervals of palaeosols are generally consistent with drilling-core-based environmental change proxies, indicating that palaeosols were formed during wet periods with higher vegetation cover. (4) A depositional hiatus period of similar to 40-50 ka exists between the surface mantle aeolian deposits and underlying gravel deposits. (5) Lake levels during the Holocene did not exceed 3205.2 m elevation (11.8 m above recent lake level of April, 2010). (C) 2012 Elsevier B.V. All rights reserved.
收录类别: SCI
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.isl.ac.cn/handle/363002/2039
Appears in Collections:青海盐湖研究所知识仓储(2014年之前)_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
1-s2.0-S1871101412000180-main[1].pdf(574KB)----开放获取
by-nc-sa
View Download

Recommended Citation:
Liu, XiangJun,Lai, ZhongPing,Yu, LuPeng,et al. Luminescence chronology of aeolian deposits from the Qinghai Lake areain the Northeastern Qinghai-Tibetan Plateau and its palaeoenvironmentalimplications[J]. QUATERNARY GEOCHRONOLOGY,2012,10(*):37-43.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Liu, XiangJun]'s Articles
 [Lai, ZhongPing]'s Articles
 [Yu, LuPeng]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Liu, XiangJun]‘s Articles
 [Lai, ZhongPing]‘s Articles
 [Yu, LuPeng]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
文件名: 1-s2.0-S1871101412000180-main[1].pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2016  中国科学院青海盐湖研究所 - Feedback
Powered by CSpace