NIGPAS OpenIR
Intensified oceanic circulation during Early Carboniferous cooling events: Evidence from carbon and nitrogen isotopes
Liu, Jiangsi1,2,3; Algeo, Thomas J.1,2,3,4; Qie, Wenkun (郄文昆)5,6; Saltzman, Matthew R.7
2019-10-01
Source PublicationPALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
Volume531Pages:13
Abstract

The Early Carboniferous was a climatic transition interval from a mid-Paleozoic greenhouse world into the Late Paleozoic Ice Age. It was marked by a long-term cooling trend that was punctuated by short glaciations in the Tournaisian and Visean (early to mid-Early Carboniferous). Here, we generated organic carbon and nitrogen isotope profiles for two widely separated Lower Carboniferous sections (Arrow Canyon Range, Nevada, and Namur-Dinant Basin, Belgium) in order to assess the global nature and timing of changes in the carbon-nitrogen cycles linked to oceanic productivity and redox conditions during this climatic transition interval. The carbon and nitrogen isotope profiles of both study sections record major perturbations during the mid-Tournaisian and Visean. A mid-Tournaisian event (TICE) is marked by increases in delta C-13(carb), delta C-13(org), and delta N-15(bulk) at Arrow Canyon (from + 0.6 to + 7.0 parts per thousand, -25.2 to - 23.7 parts per thousand, and -0.6 to + 8.9 parts per thousand, respectively) and Namur-Dinant (from -0.3 to +4.7 parts per thousand, -27.9 parts per thousand to - 22.2 parts per thousand, and -5.7 to + 5.2 parts per thousand, respectively). An early Visean event (VICE; named herein) is marked by increases in delta C-13(carb), delta C-13(org), and delta N-15(bulk) at Arrow Canyon (from -0.6 to +3.1%o, -28.4 to - 23.6 parts per thousand, and +1.4 to +9.4 parts per thousand, respectively) and Namur-Dinant (from +2.1 to +4.3 parts per thousand, -26.7 to -25.0 parts per thousand, and -1.4 to + 3.3 parts per thousand, respectively). The positive excursions in all three isotopic records during these events are consistent with increased fractional burial of organic carbon and enhanced denitrification, implying intensification of marine productivity and expansion of hypoxia in the global ocean. Given that each event coincided with lowering of sea-surface temperatures and increased glaciation (as documented from published conodont delta O-18 and sea-level records), we hypothesize that global cooling led to intensified oceanic circulation and upwelling on continental margins, triggering increased marine productivity and attendant redox changes within the affected upwelling zones. Our results provide new insights into changes in Early Carboniferous oceanic conditions in response to the initial stages of cooling leading into the Late Paleozoic Ice Age.

KeywordEuramerica Tournaisian Visean Mississippian Arrow Canyon Namur-Dinant
DOI10.1016/j.palaeo.2018.10.021
Language英语
WOS KeywordPALEOZOIC ICE-AGE ; APATITE DELTA-O-18 RECORDS ; ORGANIC-MATTER ; NORTH-AMERICA ; MISSISSIPPIAN STRATA ; OXYGEN ISOTOPES ; MONTAGNE-NOIRE ; UNITED-STATES ; CLIMATE ; PRODUCTIVITY
Funding ProjectNational Key R&D Project of China[2016YFA0601104] ; National Natural Science Foundation of China[41290260] ; National Natural Science Foundation of China[41303001] ; National Natural Science Foundation of China[41472170] ; National Natural Science Foundation of China[41772004] ; National Natural Science Foundation of China[41821001] ; National Natural Science Foundation of China[41830319] ; Chinese Academy of Sciences[XDB18030400] ; 111 project[B08030] ; China Scholarship Council[201706410081] ; Fundamental Research Funds for National University, China University of Geosciences, Wuhan ; Sedimentary Geology and Paleobiology program of the U.S. National Science Foundation ; China University of Geosciences-Wuhan[GPMR201301] ; China University of Geosciences-Wuhan[BGL21407]
WOS Research AreaPhysical Geography ; Geology ; Paleontology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS IDWOS:000483645600013
Funding OrganizationNational Key R&D Project of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; 111 project ; China Scholarship Council ; Fundamental Research Funds for National University, China University of Geosciences, Wuhan ; Sedimentary Geology and Paleobiology program of the U.S. National Science Foundation ; China University of Geosciences-Wuhan
PublisherELSEVIER
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Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/27886
Collection中国科学院南京地质古生物研究所
Corresponding AuthorAlgeo, Thomas J.; Qie, Wenkun (郄文昆)
Affiliation1.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Hubei, Peoples R China
2.China Univ Geosci, Sch Earth Sci, Wuhan 430074, Hubei, Peoples R China
3.Univ Cincinnati, Dept Geol, Cincinnati, OH 45221 USA
4.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Hubei, Peoples R China
5.Chinese Acad Sci, CAS Key Lab Econ Stratig & Palaeogeog, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Jiangsu, Peoples R China
6.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing 210008, Jiangsu, Peoples R China
7.Ohio State Univ, Sch Earth Sci, Columbus, OH 43210 USA
Corresponding Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Recommended Citation
GB/T 7714
Liu, Jiangsi,Algeo, Thomas J.,Qie, Wenkun ,et al. Intensified oceanic circulation during Early Carboniferous cooling events: Evidence from carbon and nitrogen isotopes[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2019,531:13.
APA Liu, Jiangsi,Algeo, Thomas J.,Qie, Wenkun ,&Saltzman, Matthew R..(2019).Intensified oceanic circulation during Early Carboniferous cooling events: Evidence from carbon and nitrogen isotopes.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,531,13.
MLA Liu, Jiangsi,et al."Intensified oceanic circulation during Early Carboniferous cooling events: Evidence from carbon and nitrogen isotopes".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 531(2019):13.
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