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Isotopic time-series (813C and 818O) obtained from the columnar layer of Permian brachiopod shells are a reliable archive of seasonal variations
Garbelli, Claudio1,2,3; Angiolini, Lucia4; Posenato, Renato5; Harper, Elizabeth M.1; Lamare, Miles D.6; Shi, Guang R.7; Shen, Shu-zhong8
2022-12-01
发表期刊PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
卷号607页码:19
摘要

In this paper, we develop a robust palaeo-proxy technique for inferring seasonal fluctuations in Phanerozoic seawater temperature. Specifically, we report 813C and 818O values across the columnar layer (inner shell) of Permian brachiopods, including five genera of the Order Spiriferida (Ingellarella , Martinia, Permophricodothyris , Cartorhium , and Trigonotreta) and two genera of the Order Athyridida (Araxathyris and Comelicania). These brachiopod specimens are inferred to have inhabited varied palaeo-depths, based on facies analysis, and were collected from low, middle and high palaeolatitudes. To obtain high-resolution ontogenetic isotopic time-series, a handheld microdrill was used to collect low-magnesium calcite samples along the longitudinal axis of the mid -valve for each specimen. Intrageneric and intergeneric comparison of statistics (mean values, variance, and range) reveals that 818O values are consistent within and between genera although 813C values are more variable. In specimens obtained from low palaeolatitudes (Julfa Formation, Iran; Bellerophon Formation, Italy; Late Permian), the range of 818O values is small and consistent with weak seasonal temperature variations, irre-spective of water depth. In specimens obtained from middle palaeolatitudes (Qarari Formation, Oman; Early -Middle Permian), we found a range of 818O values dependent on inferred water depth, possibly reflecting a change in thermocline structure between warm and cold seasons. In specimens obtained from high palae-olatitudes (Wasp Head and Wandrawandian Siltstone formations, Australia; Early-Middle Permian), brachiopods from glacial and interglacial climate phases show significant variations of 818O values, probably caused by seasonal changes in the seawater surface temperature. Based on these findings, the technique developed in this paper appears to provide reliable paleoclimate and paleoenvironmental data for Permian sites, and should be also applicable for Phanerozoic studies in general. However, we caution that 818O values vary dependent on the growth direction, resulting in differences of up to 5 degrees C in seawater paleotemperature calculations, and emphasise that a consistent sampling strategy accounting for shell structure and growth direction is required.

关键词Sclerogeochemistry Seawater temperature seasonality Carbon and oxygen isotope proxies Biogenic carbonate geochemistry
DOI10.1016/j.palaeo.2022.111264
收录类别SCI
语种英语
关键词[WOS]PALEOZOIC ICE-AGE ; CRETACEOUS BATAIN GROUP ; SOUTHERN SYDNEY BASIN ; WASP HEAD FORMATION ; TRIASSIC BOUNDARY ; MASS EXTINCTION ; DOUBTFUL SOUND ; INTRASPECIFIC VARIATIONS ; WANDRAWANDIAN SILTSTONE ; FOSSIL BRACHIOPODS
资助项目Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB26000000] ; CAS[QYZDY-SSW-DQC023] ; China Postdoctoral Science Foundation[2016 M591939] ; PIFI initiative of CAS[2018PC0042] ; MURST[PRIN 2017RX9XXXY] ; MIUR-Dipartimenti di Eccellenza
WOS研究方向Physical Geography ; Geology ; Paleontology
WOS类目Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号WOS:000917301400002
项目资助者Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; CAS ; China Postdoctoral Science Foundation ; PIFI initiative of CAS ; MURST ; MIUR-Dipartimenti di Eccellenza
出版者ELSEVIER
文献类型期刊论文
条目标识符http://ir.nigpas.ac.cn/handle/332004/41838
专题中国科学院南京地质古生物研究所
通讯作者Garbelli, Claudio; Shen, Shu-zhong
作者单位1.Univ Cambridge, Dept Earth Sci, Cambridge CB2 3EQ, England
2.Chinese Acad Sci, State Key Lab Palaeobiol & Stratig, Nanjing Inst Geol & Palaeontol, 39 East Beijing Rd, Nanjing 210008, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, 39 East Beijing Rd, Nanjing 210008, Peoples R China
4.Univ Milan, Dipartimento Sci Terra A Desio, Via Luigi Mangiagalli 34, Milan, Italy
5.Univ Ferrara, Dipartimento Fis & Sci Terra, Via Saragat 1, I-44121 Ferrara, Italy
6.Univ Otago, Dept Marine Sci, POB 56, Dunedin, New Zealand
7.Univ Wollongong, Sch Earth Atmospher & Life Sci, Northfields Ave, Wollongong, NSW 2522, Australia
8.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210023, Peoples R China
9.Nanjing Univ, Frontiers Sci Ctr Crit Earth Mat Cycling, Nanjing 210023, Peoples R China
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GB/T 7714
Garbelli, Claudio,Angiolini, Lucia,Posenato, Renato,et al. Isotopic time-series (813C and 818O) obtained from the columnar layer of Permian brachiopod shells are a reliable archive of seasonal variations[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2022,607:19.
APA Garbelli, Claudio.,Angiolini, Lucia.,Posenato, Renato.,Harper, Elizabeth M..,Lamare, Miles D..,...&Shen, Shu-zhong.(2022).Isotopic time-series (813C and 818O) obtained from the columnar layer of Permian brachiopod shells are a reliable archive of seasonal variations.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,607,19.
MLA Garbelli, Claudio,et al."Isotopic time-series (813C and 818O) obtained from the columnar layer of Permian brachiopod shells are a reliable archive of seasonal variations".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 607(2022):19.
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