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A new high-resolution palaeotemperature record during the Middle-Late Ordovician transition derived from conodont delta O-18 palaeothermometry

文献类型：期刊论文

作者Liu, Kang2,3,4; Jiang, Maosheng2,4; Zhang, Liyu1; Chen, Daizhao2,3,4
刊名JOURNAL OF THE GEOLOGICAL SOCIETY
出版日期2022-05-12
页码12
ISSN号0016-7649
DOI10.1144/jgs2021-148
英文摘要Climate cooling has been commonly considered as one of the most plausible triggers of the Great Ordovician Biodiversification Event (GOBE). However, the details of coeval sea-surface temperature (SST) variation during and after the biodiversification peak are still unclear owing to lack of continuous, high-resolution palaeotemperature records. Here, we report the first high-resolution in situ secondary ion mass spectrometry conodont apatite oxygen isotope (delta O-18(apatite)) curve from the Kalpin Shuinichang and Dawangou sections (the auxiliary Global Stratotype Section and Point (GSSP) for the base of the Upper Ordovician Series) to reconstruct the detailed Ordovician palaeotemperature history in the Tarim Basin, northwestern China. The new oxygen isotope data, based on mono-generic specimens, reveal a similar first-order variation trend to published records from other palaeocontinents, which is thus suggestive of a global signal. A -0.7 & PTSTHOUSND; delta O-18(apatite) shift (c. 3.2 & DEG;C warming) is identifiable in the Dawangou Formation (early-middle Darriwilian). This is followed by a long-term +2.2 & PTSTHOUSND; positive shift in delta O-18(apatite) (c. 10 & DEG;C cooling) in the overlying strata spanning the Saergan and the Kanling formations (late Darriwilian-Sandbian), probably indicating a global climatic signal. Examining the coeval marine Sr-87/Sr-86 records, the early-middle Darriwilian minor delta O-18(apatite) decrease is coincident with the onset of a long-term negative Sr-87/Sr-86 excursion, possibly indicating a slight climate warming in response to increasing volcanic degassing in the context of accelerating spreading of mid-oceanic ridges. In contrast, the following long-term positive delta O-18(apatite) excursion, in parallel with persistent Sr-87/Sr-86 drop, probably indicates a major climate cooling initially caused by the rapid tropical continental weathering, which in turn may have reduced the continental radiogenic Sr influx.Supplementary material: Three supplementary tables (S1, S2, and S3) indicating the in-situ oxygen isotopic results of conodont apatite from the Kalpin Shuinichang-Dawangou composite section, Qinghu standard, and Durango standard, respectively are available at
WOS关键词OXYGEN-ISOTOPE VARIATIONS ; TARIM BASIN ; CLIMATE-CHANGE ; APATITE ; BIODIVERSIFICATION ; TRIGGER ; EVENT ; DELTA-C-13(CARB) ; CALIBRATION ; VOLCANISM
资助项目National Natural Science Foundation of China[41573010] ; National Natural Science Foundation of China[41272134] ; National Natural Science Foundation of China[91755210]
WOS研究方向Geology
语种英语
WOS记录号WOS:000805545100001
出版者GEOLOGICAL SOC PUBL HOUSE
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/106065]  
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Jiang, Maosheng; Chen, Daizhao
作者单位1.SINOPEC, Wuxi Res Inst Petr Geol, Petr Explorat & Prod Res Inst, Wuxi 214126, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Kang,Jiang, Maosheng,Zhang, Liyu,et al. A new high-resolution palaeotemperature record during the Middle-Late Ordovician transition derived from conodont delta O-18 palaeothermometry[J]. JOURNAL OF THE GEOLOGICAL SOCIETY,2022:12.
APA Liu, Kang,Jiang, Maosheng,Zhang, Liyu,&Chen, Daizhao.(2022).A new high-resolution palaeotemperature record during the Middle-Late Ordovician transition derived from conodont delta O-18 palaeothermometry.JOURNAL OF THE GEOLOGICAL SOCIETY,12.
MLA Liu, Kang,et al."A new high-resolution palaeotemperature record during the Middle-Late Ordovician transition derived from conodont delta O-18 palaeothermometry".JOURNAL OF THE GEOLOGICAL SOCIETY (2022):12.

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来源：地质与地球物理研究所

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