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Constraining the magnitude of the carbon isotope excursion during the Paleocene-Eocene thermal maximum using larger benthic foraminifera
Zhang, Qinghai1,2,3; Ding, Lin1,2; Kitajima, Kouki4; Valley, John W.4; Zhang, Bo5; Xu, Xiaoxia1,2; Willems, Helmut3,6; Kluegel, Andreas3
2020
Source PublicationGLOBAL AND PLANETARY CHANGE
ISSN0921-8181
Volume184Pages:13
AbstractThe Paleocene-Eocene thermal maximum (PETM) was an extraordinary pulse of global warming that left an indelible mark on the Earth approximately 56 Ma ago. This warming event is associated with an addition of large amounts of C-13-depleted carbon into the atmosphere-ocean system, but the magnitude of the negative carbon isotope excursion (CIE) signaling the PETM onset and often used to estimate mass of the released carbon is still debated. Here we gauge the CIE magnitude through the use of secondary ion mass spectrometry (SIMS) to perform in situ delta C-13 measurements within individual larger benthic foraminifera preserved in a tropical shallow-marine limestone section at Tingri, south Tibet. This SIMS-based delta C-13 record yields a CIE (Delta similar to 7 parts per thousand) comparable in magnitude to that registered by some terrestrial PETM records but larger than the similar to 4 parts per thousand CIE returned by surface-dwelling planktonic foraminifera in deep-sea records. We posit that the CIE magnitude in the surface ocean and atmosphere was similar to 7 parts per thousand, and that previous similar to 4 parts per thousand estimates are attenuated by incomplete preservation and/or diagenetic overprinting. Mass balance calculations indicate that the released carbon mass during the CIE would not exceed 28,000 petagrams, given that the carbon was sourced from organic matter, permafrost, thermogenic methane, methane hydrate, or any of their combinations. Our study demonstrates that delta C-13 records from some shallow-marine carbonate sections can avoid strong diagenetic alteration, preserving primary signals of deep-time carbon perturbations.
KeywordPaleocene-Eocene thermal maximum CIE magnitude SIMS Larger benthic foraminifera Tibet
DOI10.1016/j.gloplacha.2019.103049
Language英语
WOS KeywordEARLY MARINE DIAGENESIS ; ORGANIC-CARBON ; CHEMICAL DIAGENESIS ; ROCK INTERACTION ; METHANE HYDRATE ; TRACE-ELEMENT ; RECORDS ; SEAWATER ; DELTA-C-13 ; CLIMATE
Funding ProjectNational Natural Science Foundation of China[41490615] ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program[2019QZKK0708] ; National Key Research and Development Plan[2016YFC0600303] ; CAS Pioneer Hundred Talents Program ; Deutsche Forschungsgemeinschaft[Wi725/29] ; U.S. National Science Foundation[EAR-1355590] ; U.S. National Science Foundation[1658823] ; U.S. Department of Energy[DE-FG02-93ER14389] ; University of Wisconsin-Madison
WOS Research AreaPhysical Geography ; Geology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000508491500009
Funding OrganizationNational Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; National Key Research and Development Plan ; CAS Pioneer Hundred Talents Program ; Deutsche Forschungsgemeinschaft ; U.S. National Science Foundation ; U.S. Department of Energy ; University of Wisconsin-Madison
PublisherELSEVIER
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Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/29597
Collection中国科学院南京地质古生物研究所
Corresponding AuthorZhang, Qinghai
Affiliation1.Chinese Acad Sci, Key Lab Continental Collis & Plateau Uplift, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China
2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
3.Univ Bremen, Dept Geosci, D-28359 Bremen, Germany
4.Univ Wisconsin, Dept Geosci, WiscSIMS, Madison, WI 53706 USA
5.Peking Univ, Sch Earth & Space Sci, Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China
6.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Qinghai,Ding, Lin,Kitajima, Kouki,et al. Constraining the magnitude of the carbon isotope excursion during the Paleocene-Eocene thermal maximum using larger benthic foraminifera[J]. GLOBAL AND PLANETARY CHANGE,2020,184:13.
APA Zhang, Qinghai.,Ding, Lin.,Kitajima, Kouki.,Valley, John W..,Zhang, Bo.,...&Kluegel, Andreas.(2020).Constraining the magnitude of the carbon isotope excursion during the Paleocene-Eocene thermal maximum using larger benthic foraminifera.GLOBAL AND PLANETARY CHANGE,184,13.
MLA Zhang, Qinghai,et al."Constraining the magnitude of the carbon isotope excursion during the Paleocene-Eocene thermal maximum using larger benthic foraminifera".GLOBAL AND PLANETARY CHANGE 184(2020):13.
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