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Structure and magnitude of the carbon isotope excursion during the Paleocene-Eocene thermal maximum
Zhang, QH (Zhang, Qinghai)1,2; Wendler, I (Wendler, Ines)1; Xu, XX (Xu, Xiaoxia)1; Willems, H (Willems, Helmut)1,3; Ding, L (Ding, Lin)2; Zhang, QH
Source PublicationGONDWANA RESEARCH
2017
Volume46Issue:0Pages:114-123
DOI10.1016/j.gr.2017.02.016
AbstractThe Paleocene-Eocene Thermal Maximum (PETM) was a geologically rapid and transient warming event that occurred ca. 56 million years ago (Ma). It was associated with a pronounced negative carbon isotope excursion (CIE) and with profound changes in the atmosphere, hydrosphere and biosphere. This event reflects injections of large amounts of carbon into the atmosphere-ocean system, but, whether single or multiple episodes of carbon release caused this event is uncertain. Here, we present carbon isotope data of bulk carbonate from two parallel limestone sections at Tingri (south Tibet), where the limestone was deposited on a tropical carbonate ramp during the PETM. Carbon isotope data of bulk carbonate from both sections are almost identical, displaying an expanded stepped CIE profile with large magnitude. The stepped CIE profile consists of three discrete intervals of decreasing carbon isotope values, which can be correlated on an inter-regional scale between sections from different depositional environments (lake, carbonate ramp, continental slope, and open ocean). The consistency of these correlations implies occurrence of at least three carbon releases within the CIE and indicates complex processes of carbon injection during the PETM. Moreover, the CIE magnitude of similar to 7 parts per thousand recorded at Tingri is tentatively interpreted to reflect carbon isotope changes in the atmosphere and the surface ocean, which is larger than the generally accepted value of similar to 4 parts per thousand but is still within the range of some previous records. (C) 2017 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
Subject Area地质学
WOS IDWOS:000399985000007
Language英语
Indexed BySCI
KeywordMETHANE HYDRATE CENTRAL CHINA RECORD RELEASE SEAWATER CLIMATE OCEAN END SR STRATIGRAPHY
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary ; Geology
Cooperation Status国际
SubtypeArticle
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8235
Collection图书馆
Corresponding AuthorZhang, QH
Affiliation1.Univ Bremen, Dept Geosci, D-28359 Bremen, Germany.
2.Chinese Acad Sci, Key Lab Continental Collis & Plateau Uplift, Inst Tibetan Plateau Res, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China.
3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Jiangsu, Peoples R China.
Recommended Citation
GB/T 7714
Zhang, QH ,Wendler, I ,Xu, XX ,et al. Structure and magnitude of the carbon isotope excursion during the Paleocene-Eocene thermal maximum[J]. GONDWANA RESEARCH,2017,46(0):114-123.
APA Zhang, QH ,Wendler, I ,Xu, XX ,Willems, H ,Ding, L ,&Zhang, QH.(2017).Structure and magnitude of the carbon isotope excursion during the Paleocene-Eocene thermal maximum.GONDWANA RESEARCH,46(0),114-123.
MLA Zhang, QH ,et al."Structure and magnitude of the carbon isotope excursion during the Paleocene-Eocene thermal maximum".GONDWANA RESEARCH 46.0(2017):114-123.
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