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Clumped and stable isotopes of land snail shells on the Chinese Loess Plateau and their climatic implications
Dong, Jibao1,2; Eiler, John3; An, Zhisheng1,2; Wu, Naiqin4; Liu, Weiguo1; Li, Xiangzhong1; Kitchen, Nami3; Lu, Fengyan1
通讯作者Dong, Jibao(djb@ieecas.cn)
2020-02-05
发表期刊CHEMICAL GEOLOGY
ISSN0009-2541
卷号533页码:10
摘要We report stable (delta C-13(shell), delta O-18(shell)) and clumped isotope (Delta(47)) compositions of modern and last glacial fossil snail shell carbonates from the Luochuan and Weinan sections on the central and southern Chinese Loess Plateau (CLP). Our study reveals that the average Delta(47) temperature (T-47) of modern snails is consistent with monitored temperatures during the snail growing season at the studied locations and is similar to 10 degrees C higher than that of fossil snails from glacial time. Moreover, the average delta C-13(shell) of modern snails is more depleted than that of fossils. We argue that the delta C-13(shell) cannot record changes in plant communities (i.e., the C3/C4 ratio) on the CLP and may mainly indicate arid conditions with depleted values reflecting reduced aridity. Additionally, the reconstructed snail body water delta O-18 (delta O-18(water)) of modern snails is more enriched than delta O-18 in modern growing season precipitation and delta O-18(water) of fossils. This contrast may be related to the high degree of evaporative enrichment of environmental water O-18 in the body/ingested by modern snails under warm conditions. Therefore, we suggest that using delta O-18(shell) to directly reconstruct the oxygen isotopes of precipitation is difficult and that higher delta O-18(shell) and delta O-18(water) values probably indicate higher environmental temperature/stronger evaporative enrichment on glacial-interglacial timescales on the CLP.
关键词Clumped isotopes Stable isotopes Land snail Temperature Chinese Loess Plateau (CLP)
DOI10.1016/j.chemgeo.2019.119414
关键词[WOS]RADIOCARBON AGE ANOMALIES ; SOUTHERN GREAT-PLAINS ; SYNTHETIC ARAGONITE ; YOUNGER DRYAS ; ASIAN MONSOON ; LOW-LATITUDE ; NORTH CHINA ; BODY-WATER ; CARBON ; OXYGEN
收录类别SCI ; SCI
语种英语
资助项目Training Program of the State Key Laboratory of Loess and Quaternary Geology, Chinese Academy of Sciences[QYZDY-SSW-DQC001] ; Training Program of the State Key Laboratory of Loess and Quaternary Geology, Chinese Academy of Sciences[ZDBS-SSW-DQC001] ; MOST program[2016YFE0109500] ; National Natural Science Foundation of China[41430103] ; National Natural Science Foundation of China[41302152] ; [EAR-0909199] ; [EAR 1211378]
WOS研究方向Geochemistry & Geophysics
项目资助者Training Program of the State Key Laboratory of Loess and Quaternary Geology, Chinese Academy of Sciences ; MOST program ; National Natural Science Foundation of China
WOS类目Geochemistry & Geophysics
WOS记录号WOS:000513871400004
出版者ELSEVIER
引用统计
被引频次:14[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/12706
专题加速器质谱中心
第四纪科学与全球变化卓越创新中心
通讯作者Dong, Jibao
作者单位1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
2.Chinese Acad Sci, CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
3.CALTECH, Pasadena, CA 91125 USA
4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
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Dong, Jibao,Eiler, John,An, Zhisheng,et al. Clumped and stable isotopes of land snail shells on the Chinese Loess Plateau and their climatic implications[J]. CHEMICAL GEOLOGY,2020,533:10.
APA Dong, Jibao.,Eiler, John.,An, Zhisheng.,Wu, Naiqin.,Liu, Weiguo.,...&Lu, Fengyan.(2020).Clumped and stable isotopes of land snail shells on the Chinese Loess Plateau and their climatic implications.CHEMICAL GEOLOGY,533,10.
MLA Dong, Jibao,et al."Clumped and stable isotopes of land snail shells on the Chinese Loess Plateau and their climatic implications".CHEMICAL GEOLOGY 533(2020):10.
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