ISL OpenIR  > 青海盐湖研究所知识仓储
OSL chronology of loess deposits in East China and its implications forEast Asian monsoon history
Lai, ZhongPing; Zhang, WeiGuo; Chen, Xi; Jia, YuLian; Liu, XiangJun; Fan, QiShun; Long, Hao
2010
Source PublicationQUATERNARY GEOCHRONOLOGY
ISSN1871-1014
Volume5Issue:2 -3Pages:154-158
AbstractControversy exists regarding the chronology of loess in the Nanjing area in Jiangsu Province and the Jiujiang area in Jiangxi Province, East China. The chronology is of special interest, because the age of the initial accumulation for loess in these areas indicates that dust accumulation has been extended from the Loess Plateau in North China to East China at that time. This implies a threshold in the evolution of the East Asian monsoon, with the strengthened winter monsoon transporting aeolian dust further to the south. In this study nine luminescence samples were collected from the Jiujiang area and four samples from the Nanjing area. Quartz grains of 38-63 mu m were isolated and the single-aliquot regenerative-dose (SAR) protocol was employed for De determination. For all samples from the Nanjing area, during the SAR measurement cycles the test-dose sensitivity was dose dependent and dropped significantly when the regeneration dose reached >300 Gy, while it increased linearly when the regeneration dose value ranged from 25 to 300 Gy. The reason for this is not yet known. The OSL chronology and its implications for paleoenvironmental change are discussed. It is concluded that: (1) loess deposition in the Jiujiang area started in the early Last Glaciation; and (2) the first loess layer in the Nanjing area was deposited during the last Glaciation. (C) 2009 Elsevier B.V. All rights reserved. Controversy exists regarding the chronology of loess in the Nanjing area in Jiangsu Province and the Jiujiang area in Jiangxi Province, East China. The chronology is of special interest, because the age of the initial accumulation for loess in these areas indicates that dust accumulation has been extended from the Loess Plateau in North China to East China at that time. This implies a threshold in the evolution of the East Asian monsoon, with the strengthened winter monsoon transporting aeolian dust further to the south. In this study nine luminescence samples were collected from the Jiujiang area and four samples from the Nanjing area. Quartz grains of 38-63 mu m were isolated and the single-aliquot regenerative-dose (SAR) protocol was employed for De determination. For all samples from the Nanjing area, during the SAR measurement cycles the test-dose sensitivity was dose dependent and dropped significantly when the regeneration dose reached >300 Gy, while it increased linearly when the regeneration dose value ranged from 25 to 300 Gy. The reason for this is not yet known. The OSL chronology and its implications for paleoenvironmental change are discussed. It is concluded that: (1) loess deposition in the Jiujiang area started in the early Last Glaciation; and (2) the first loess layer in the Nanjing area was deposited during the last Glaciation. (C) 2009 Elsevier B.V. All rights reserved.
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/1922
Collection青海盐湖研究所知识仓储
Recommended Citation
GB/T 7714
Lai, ZhongPing,Zhang, WeiGuo,Chen, Xi,et al. OSL chronology of loess deposits in East China and its implications forEast Asian monsoon history[J]. QUATERNARY GEOCHRONOLOGY,2010,5(2 -3):154-158.
APA Lai, ZhongPing.,Zhang, WeiGuo.,Chen, Xi.,Jia, YuLian.,Liu, XiangJun.,...&Long, Hao.(2010).OSL chronology of loess deposits in East China and its implications forEast Asian monsoon history.QUATERNARY GEOCHRONOLOGY,5(2 -3),154-158.
MLA Lai, ZhongPing,et al."OSL chronology of loess deposits in East China and its implications forEast Asian monsoon history".QUATERNARY GEOCHRONOLOGY 5.2 -3(2010):154-158.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Lai, ZhongPing]'s Articles
[Zhang, WeiGuo]'s Articles
[Chen, Xi]'s Articles
Baidu academic
Similar articles in Baidu academic
[Lai, ZhongPing]'s Articles
[Zhang, WeiGuo]'s Articles
[Chen, Xi]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Lai, ZhongPing]'s Articles
[Zhang, WeiGuo]'s Articles
[Chen, Xi]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

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