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Volcanic activities triggered the first global cooling event in the Phanerozoic
Tao, Huifei1; Qiu, Zhen2; Lu, Bin2; Liu, Yutong1; Qiu, Junli1
2020-06-01
Source PublicationJOURNAL OF ASIAN EARTH SCIENCES
ISSN1367-9120
Volume194Pages:9
AbstractLate Ordovician - Early Silurian bentonites and shales are widely distributed in the western Yangtze plate, South China. This study is to use these rocks to examine the mechanism of global cooling. We present total organic carbon content (TOC) and organic carbon isotope data. The TOC of the shales for the Qiliao (QL) and Shuanghe (SH) sections range from 0.21% to 5.88% with an average of 3.0%, and from 1.48% to 6.34% with an average of 2.91%, respectively. The organic carbon isotopic compositions of the shales from the QL and SH sections are 31.1 parts per thousand-29.4 parts per thousand (average 30.3%o) and -30.8 parts per thousand-29.1 parts per thousand (average 30.0 parts per thousand, respectively. In combination with previous studies of the Katian to Hirnantian glaciation, two conclusions can be summarized: (1) shales in close proximity to volcanic ash (bentonite) layers exhibit obvious TOC reduction, which indicates that the deposition of volcanic ash inhibited the productivity of marine plankton; (2) the organic carbon isotope compositions of shales close to volcanic ash layers present positive excursions, reflecting the decline of the atmospheric carbon dioxide after the volcanic ruption. The main reason is probably that the intense volcanic eruptions created abundant volcanic ash for weathering. It is probably 840 x 10(15) kg (1.9 x 10(19) mol) carbon dioxide was consumed in the process of volcanic ash weathering, this would make the carbon dioxide content of the atmosphere drop to the threshold level, which triggered the global glacial event during the Early Hirnantian stage, and then the Earth entered into an ice age in the Late Ordovician. Therefore, this study provides a new point of view to understand the climate variation in the Earth's geological evolution history.
KeywordLate Ordovician Bentonite Carbon dioxide Global glacial event Yangtze plate
DOI10.1016/j.jseaes.2019.104074
Funding OrganizationNational natural science foundation of China ; National natural science foundation of China ; Research Institute of Petroleum Exploration & Development CNPC Program ; Research Institute of Petroleum Exploration & Development CNPC Program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Gansu Natural Science Fund ; Gansu Natural Science Fund ; National natural science foundation of China ; National natural science foundation of China ; Research Institute of Petroleum Exploration & Development CNPC Program ; Research Institute of Petroleum Exploration & Development CNPC Program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Gansu Natural Science Fund ; Gansu Natural Science Fund ; National natural science foundation of China ; National natural science foundation of China ; Research Institute of Petroleum Exploration & Development CNPC Program ; Research Institute of Petroleum Exploration & Development CNPC Program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Gansu Natural Science Fund ; Gansu Natural Science Fund ; National natural science foundation of China ; National natural science foundation of China ; Research Institute of Petroleum Exploration & Development CNPC Program ; Research Institute of Petroleum Exploration & Development CNPC Program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Gansu Natural Science Fund ; Gansu Natural Science Fund
WOS KeywordORDOVICIAN-SILURIAN TRANSITION ; CARBON-ISOTOPE FRACTIONATION ; ORGANIC-CARBON ; ATMOSPHERIC CO2 ; SOUTH CHINA ; K-BENTONITE ; PRODUCTIVITY ; DELTA-C-13 ; MARINE ; CYCLE
Language英语
Funding ProjectNational natural science foundation of China[41602119] ; Research Institute of Petroleum Exploration & Development CNPC Program[XN41601] ; Research Institute of Petroleum Exploration & Development CNPC Program[XN41603] ; Youth Innovation Promotion Association CAS[2016068] ; Gansu Natural Science Fund[18JR3RA396]
Funding OrganizationNational natural science foundation of China ; National natural science foundation of China ; Research Institute of Petroleum Exploration & Development CNPC Program ; Research Institute of Petroleum Exploration & Development CNPC Program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Gansu Natural Science Fund ; Gansu Natural Science Fund ; National natural science foundation of China ; National natural science foundation of China ; Research Institute of Petroleum Exploration & Development CNPC Program ; Research Institute of Petroleum Exploration & Development CNPC Program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Gansu Natural Science Fund ; Gansu Natural Science Fund ; National natural science foundation of China ; National natural science foundation of China ; Research Institute of Petroleum Exploration & Development CNPC Program ; Research Institute of Petroleum Exploration & Development CNPC Program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Gansu Natural Science Fund ; Gansu Natural Science Fund ; National natural science foundation of China ; National natural science foundation of China ; Research Institute of Petroleum Exploration & Development CNPC Program ; Research Institute of Petroleum Exploration & Development CNPC Program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Gansu Natural Science Fund ; Gansu Natural Science Fund
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000538820400029
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/96909
Collection兰州油气中心
Corresponding AuthorTao, Huifei; Qiu, Zhen
Affiliation1.Chinese Acad Sci, Lanzhou Ctr Oil & Gas Resources, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China
2.PetroChina Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Tao, Huifei,Qiu, Zhen,Lu, Bin,et al. Volcanic activities triggered the first global cooling event in the Phanerozoic[J]. JOURNAL OF ASIAN EARTH SCIENCES,2020,194:9.
APA Tao, Huifei,Qiu, Zhen,Lu, Bin,Liu, Yutong,&Qiu, Junli.(2020).Volcanic activities triggered the first global cooling event in the Phanerozoic.JOURNAL OF ASIAN EARTH SCIENCES,194,9.
MLA Tao, Huifei,et al."Volcanic activities triggered the first global cooling event in the Phanerozoic".JOURNAL OF ASIAN EARTH SCIENCES 194(2020):9.
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