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Clumped isotopes in land snail shells over China: Towards establishing a biogenic carbonate paleothermometer

文献类型：期刊论文

作者Zhai, Jixuan1,2,3,4; Wang, Xu1,2,3; Qin, Ben5; Cui, Linlin3,6; Zhang, Shuhua7; Ding, Zhongli1,2,3
刊名GEOCHIMICA ET COSMOCHIMICA ACTA
出版日期2019-07-15
卷号257页码:68-79
ISSN号0016-7037
关键词Clumped isotope Land snail Bradybaena Cathaica Delta(47)-T transfer function Paleothermometer
DOI10.1016/j.gca.2019.04.028
英文摘要Land snail fossils are abundantly distributed in geological deposits and their isotopic compositions provide a means to determine paleoclimatic changes. With the development of the clumped isotopes (Delta(47)) geothermometer, many efforts have been made in recent years to study clumped isotopes in land snail shell carbonate. Although there have been several recent attempts, there is, as yet, no empirical calibration function to convert land snail Delta(47) to environmental temperature. Here, we systematically analyzed clumped isotopes (Delta(47)) of two common land snail species (Bradybaena and Cathaica) from China. Results showed that temperatures calculated using the Delta(47) (T-47) of both species did not correlate with the mean annual temperatures (MAT) at the study sites. However, the T-47-MAT offset is negatively correlated to MAT, suggesting that land snails tend to add shell during the warmer months at colder sites or modulate their body temperature differently in colder regions. Meanwhile, clumped temperatures of Cathaica are 3.4 +/- 1.5 degrees C higher than those of Bradybaena at 18 sites, indicating that a species-specific transfer function is needed to reconstruct paleotemperature using land snail clumped isotopes. After determining the proper duration of the growing season for land snails at different locations, we developed a Delta(47)-growth season temperature (GST) transfer function for the two species. The calibration function for Bradybaena land snails is expressed by a linear regression between 1/T-2 and absolute Delta(47) (R-2 = 0.94): Delta(47) = (0.0513 +/- 0.0036) x 10(6)/T-2 + (0.0930 +/- 0.0413), where Delta(47) is expressed in %0 and T in K. The calibration function for Cathaica is as follows (R-2 = 0.80): Delta(47) = (0.055 +/- 0.011) x 10(6)/T-2 + (0.035 +/- 0.129). The function for Cathaica was successfully applied to reconstruct mean summer (June-July-August) temperatures during the Last Glacial Maximum and modern times on the central Chinese Loess Plateau, based on Delta(47) data of Cathaica sp. provided by Eagle et al (2013a). This testifies to the validity of the aforementioned constructed transfer function. In addition, the calculated delta O-18 of body water (delta O-18(BW)) for Bradybaena showed a robust correlation with the delta O-18 of rainfall (delta O-18(p)), particularly in northern China, which points to the potential to trace hydrological changes in the region. In contrast, Cathaica delta O-18(BW) did not show a straightforward relation to delta O-18(p). This inter-species complexity warrants further study. (C) 2019 Elsevier Ltd. All rights reserved.
WOS关键词OXYGEN ; TEMPERATURE ; DIET ; FRACTIONATION ; DELTA-C-13 ; SIGNATURES ; ARAGONITE ; WATER
资助项目National Natural Science Foundation of China[41572163] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB26000000] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19050104] ; State Scholarship Fund for Study Abroad by the China Scholarship Council (CSC)
WOS研究方向Geochemistry & Geophysics
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:000470830800005
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; State Scholarship Fund for Study Abroad by the China Scholarship Council (CSC) ; State Scholarship Fund for Study Abroad by the China Scholarship Council (CSC) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; State Scholarship Fund for Study Abroad by the China Scholarship Council (CSC) ; State Scholarship Fund for Study Abroad by the China Scholarship Council (CSC) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; State Scholarship Fund for Study Abroad by the China Scholarship Council (CSC) ; State Scholarship Fund for Study Abroad by the China Scholarship Council (CSC) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; State Scholarship Fund for Study Abroad by the China Scholarship Council (CSC) ; State Scholarship Fund for Study Abroad by the China Scholarship Council (CSC)
源URL[http://ir.iggcas.ac.cn/handle/132A11/92248]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Wang, Xu
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, POB 9825, Beijing 100029, Peoples R China
2.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China
3.Chinese Acad Sci, Inst Earth Sci, POB 9825, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China
6.Chinese Acad Sci, Inst Geol & Geophys, POB 9825, Beijing 100029, Peoples R China
7.Brigade 606 Sichuan Met & Geol Explorat Bur, Chengdu 611730, Sichuan, Peoples R China
推荐引用方式
GB/T 7714		 Zhai, Jixuan,Wang, Xu,Qin, Ben,et al. Clumped isotopes in land snail shells over China: Towards establishing a biogenic carbonate paleothermometer[J]. GEOCHIMICA ET COSMOCHIMICA ACTA,2019,257:68-79.
APA Zhai, Jixuan,Wang, Xu,Qin, Ben,Cui, Linlin,Zhang, Shuhua,&Ding, Zhongli.(2019).Clumped isotopes in land snail shells over China: Towards establishing a biogenic carbonate paleothermometer.GEOCHIMICA ET COSMOCHIMICA ACTA,257,68-79.
MLA Zhai, Jixuan,et al."Clumped isotopes in land snail shells over China: Towards establishing a biogenic carbonate paleothermometer".GEOCHIMICA ET COSMOCHIMICA ACTA 257(2019):68-79.

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来源：地质与地球物理研究所

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