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δ(13)C Values of loess total carbonate: A sensitive proxy for Asian summer monsoon in arid northwestern margin of the Chinese loess plateau
Liu, WG (Liu, Weiguo)[1,2]; Yang, H (Yang, Hong)[3]; Sun, YB (Sun, Youbin)[1]; Wang, XL (Wang, Xulong)[1]
2011-05-24
Source PublicationCHEMICAL GEOLOGY
Volume284Issue:3-4Pages:317-322
Subtype期刊论文
Abstract

We measured carbon isotope ratio of loess total carbonates (delta(13)Cic) from the Jingyuan loess profile in the arid northwestern portion of the Chinese Loess Plateau (CLP), in order to examine the effectiveness and sensitivity of loess total carbonate delta(13)Cic values as a potential paleoenvironmental indicator. The 813Cic record in the loess profile shows large variations ranging from -1%. to -7%., during the past 70 ka. The most negative delta(13)Cic peaks coincide with paleosol formation; S(0), L(1)SS(2), and L(1)SS(2), which occurred under relatively wetter climatic conditions during middle Holocene and marine delta(18)O stages 3. On the other hand, the least negative delta(13)Cic values responded to loess accumulation during relative drier phases of LGM and marine delta(18)O stages 4. While delta(13)Cic variations in the loess profile in arid area demonstrate a clear correlation with changes of total organic carbon isotope (delta(13)Coc) of bulk sediments which has been widely used as a proxy for the past monsoon precipitation intensity, the delta(13)Cic values in the loess profile are more sensitive to the changes of paleohabitat controlled by the Asian monsoon variation in the arid area. We propose that carbon isotope compositions of total carbonates in loess profile can serve as a sensitive and reliable proxy for the Asian summer monsoon in the arid northwestern Chinese Loess Plateau.

KeywordLoess-paleosol Carbonate Carbon Isotope Plant Density Monsoon Precipitation
DOI10.1016/j.chemgeo.2011.03.011
Indexed BySCI
Language英语
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Cited Times:40[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10255
Collection加速器质谱中心
Corresponding AuthorLiu, WG (Liu, Weiguo)[1,2]
Affiliation1.State Key Laboratory of Loess and Quaternary Geology, IEE, CAS, Xi'an, 710075, China;
2.School of Human Settlement and Civil Engineering, Xi'an Jiaotong University, Xi'an, 710049, China;
3.Department of Science and Technology, College of Arts and Sciences, Bryant University, Smithfield, RI 02917, USA
Recommended Citation
GB/T 7714
Liu, WG ,Yang, H ,Sun, YB ,et al. δ(13)C Values of loess total carbonate: A sensitive proxy for Asian summer monsoon in arid northwestern margin of the Chinese loess plateau[J]. CHEMICAL GEOLOGY,2011,284(3-4):317-322.
APA Liu, WG ,Yang, H ,Sun, YB ,&Wang, XL .(2011).δ(13)C Values of loess total carbonate: A sensitive proxy for Asian summer monsoon in arid northwestern margin of the Chinese loess plateau.CHEMICAL GEOLOGY,284(3-4),317-322.
MLA Liu, WG ,et al."δ(13)C Values of loess total carbonate: A sensitive proxy for Asian summer monsoon in arid northwestern margin of the Chinese loess plateau".CHEMICAL GEOLOGY 284.3-4(2011):317-322.
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