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 |
ISSN | 0009-2541 |
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) |
DOI | 10.1016/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 | |
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 |
推荐引用方式 GB/T 7714 | 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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