High-resolution carbon isotope stratigraphy of the Lower and Middle Ordovician succession of the Yangtze Platform, China
Variation in the relative abundance of the stable carbon isotopes has been widely used to correlate Ordovician marine successions over the past two decades. To date, only a few of studies of Ordovician carbon chemostratigraphy have been conducted in South China. Most of the previous studies in this...
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Estonian Academy Publishers
2023-06-01
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| Series: | Estonian Journal of Earth Sciences |
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| author | Rongchang Wu Fangyi Gong Mikael Calner Jianbo Liu Oliver Lehnert Xiaocong Luan Guanzhou Yan Lixia Li Renbin Zhan |
| author_facet | Rongchang Wu Fangyi Gong Mikael Calner Jianbo Liu Oliver Lehnert Xiaocong Luan Guanzhou Yan Lixia Li Renbin Zhan |
| author_sort | Rongchang Wu |
| collection | DOAJ |
| description | Variation in the relative abundance of the stable carbon isotopes has been widely used to correlate Ordovician marine successions over the past two decades. To date, only a few of studies of Ordovician carbon chemostratigraphy have been conducted in South China. Most of the previous studies in this field have focused on specific time intervals and/or events in the Middle and Upper Ordovician. The Lower and Middle Ordovician of the Yangtze Platform is typically represented by a sedimentary succession dominated by carbonate rocks, which is ideal for studying the carbon chemostratigraphy. Three sections spanning the Nantsinkuan/Lunshan, Fenhsiang, Hunghuayuan, and Dawan/Zitai formations, corresponding to the TremadocianâDapingian in age, have been sampled for high-resolution δ13C chemostratigraphy. Our new δ13C data reveal five tie-points with the potential for global correlation: (1) a positive δ13C excursion in the lower Nantsinkuan Formation within the Tremadocian Rossodus manitouensis Zone; (2) an excursion with two peaks roughly within the late Tremadocian Paltodus âdeltiferâ Zone; (3) a positive δ13C shift in the lower Hunghuayuan Formation, within the early Floian Serratognathus diversus Zone; (4) a gradual positive δ13C shift in the late Floian, ranging from the uppermost S. diversus Zone to the basal Oepikodus evae Zone; (5) a minor negative shift in the lower Dawan/Zitai Formation, within the early Dapingian Baltoniodus triangularis Zone. These excursions are herein used for correlation of the Yangtze Platform strata with successions from South China, North China, the Argentine Precordillera, North America and Baltica. From a palaeogeographical perspective, the Gudongkou, Xiangshuidong and Daling sections represent depositional environments along an inner to outer ramp profile. The δ13C data from these sections show successively heavier (higher) δ13C values with increasing depositional depth, which can be interpreted as due to remineralization of organic carbon within the carbonate rocks formed in the shallow-water environment. |
| first_indexed | 2024-03-13T05:36:17Z |
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| issn | 1736-4728 1736-7557 |
| language | English |
| last_indexed | 2024-03-13T05:36:17Z |
| publishDate | 2023-06-01 |
| publisher | Estonian Academy Publishers |
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| spelling | doaj.art-23230eeba9a5471cb05a4393711c85eb2023-06-14T07:33:29ZengEstonian Academy PublishersEstonian Journal of Earth Sciences1736-47281736-75572023-06-017211650https://doi.org/10.3176/earth.2023.33https://doi.org/10.3176/earth.2023.33High-resolution carbon isotope stratigraphy of the Lower and Middle Ordovician succession of the Yangtze Platform, ChinaRongchang Wu0Fangyi Gong1Mikael Calner2Jianbo Liu3Oliver Lehnert4Xiaocong Luan5Guanzhou Yan6Lixia Li7Renbin Zhan8State Key Laboratory of Palaeobiology and Stratigraphy (NIGP, Chinese Academy of Sciences), 39 East Bejing Road, Nanjing 210008, China; Department of Geology, Lund University, Sölvegatan 12, SE-223 62 Lund, Sweden; Rongchang.Wu@geol.lu.se.State Key Laboratory of Palaeobiology and Stratigraphy (NIGP, Chinese Academy of Sciences), 39 East Bejing Road, Nanjing 210008, ChinaDepartment of Geology, Lund University, Sölvegatan 12, SE-223 62 Lund, Sweden; Mikael.Calner@geol.lu.sePalaeontology and Stratigraphy, School of Earth and Space Sciences, Peking University, 5 Yiheyuan Road, Haidian District, Beijing 100871, ChinaGeoZentrum Nordbayern, Universität Erlangen, Schlossgarten 5, D-91054 Erlangen, Germany; oliver.lehnert@fau.de / Department of Geology, Lund University, Sölvegatan 12, 223 62 Lund, Sweden; oliver.lehnert@geol.lu.seState Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, ChinaState Key Laboratory of Palaeobiology and Stratigraphy (NIGP, Chinese Academy of Sciences), 39 East Bejing Road, Nanjing 210008, ChinaState Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing, Nanjing 210008, ChinaState Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences (CAS), 39 East Beijing Road, Nanjing 210008, China; rbzhan@nigpas.ac.cnVariation in the relative abundance of the stable carbon isotopes has been widely used to correlate Ordovician marine successions over the past two decades. To date, only a few of studies of Ordovician carbon chemostratigraphy have been conducted in South China. Most of the previous studies in this field have focused on specific time intervals and/or events in the Middle and Upper Ordovician. The Lower and Middle Ordovician of the Yangtze Platform is typically represented by a sedimentary succession dominated by carbonate rocks, which is ideal for studying the carbon chemostratigraphy. Three sections spanning the Nantsinkuan/Lunshan, Fenhsiang, Hunghuayuan, and Dawan/Zitai formations, corresponding to the TremadocianâDapingian in age, have been sampled for high-resolution δ13C chemostratigraphy. Our new δ13C data reveal five tie-points with the potential for global correlation: (1) a positive δ13C excursion in the lower Nantsinkuan Formation within the Tremadocian Rossodus manitouensis Zone; (2) an excursion with two peaks roughly within the late Tremadocian Paltodus âdeltiferâ Zone; (3) a positive δ13C shift in the lower Hunghuayuan Formation, within the early Floian Serratognathus diversus Zone; (4) a gradual positive δ13C shift in the late Floian, ranging from the uppermost S. diversus Zone to the basal Oepikodus evae Zone; (5) a minor negative shift in the lower Dawan/Zitai Formation, within the early Dapingian Baltoniodus triangularis Zone. These excursions are herein used for correlation of the Yangtze Platform strata with successions from South China, North China, the Argentine Precordillera, North America and Baltica. From a palaeogeographical perspective, the Gudongkou, Xiangshuidong and Daling sections represent depositional environments along an inner to outer ramp profile. The δ13C data from these sections show successively heavier (higher) δ13C values with increasing depositional depth, which can be interpreted as due to remineralization of organic carbon within the carbonate rocks formed in the shallow-water environment.https://kirj.ee/wp-content/plugins/kirj/pub/earth-1-2023-165_20230614071328.pdflower and middle ordoviciancarbon isotopeschemostratigraphyyangtze platformsouth china |
| spellingShingle | Rongchang Wu Fangyi Gong Mikael Calner Jianbo Liu Oliver Lehnert Xiaocong Luan Guanzhou Yan Lixia Li Renbin Zhan High-resolution carbon isotope stratigraphy of the Lower and Middle Ordovician succession of the Yangtze Platform, China Estonian Journal of Earth Sciences lower and middle ordovician carbon isotopes chemostratigraphy yangtze platform south china |
| title | High-resolution carbon isotope stratigraphy of the Lower and Middle Ordovician succession of the Yangtze Platform, China |
| title_full | High-resolution carbon isotope stratigraphy of the Lower and Middle Ordovician succession of the Yangtze Platform, China |
| title_fullStr | High-resolution carbon isotope stratigraphy of the Lower and Middle Ordovician succession of the Yangtze Platform, China |
| title_full_unstemmed | High-resolution carbon isotope stratigraphy of the Lower and Middle Ordovician succession of the Yangtze Platform, China |
| title_short | High-resolution carbon isotope stratigraphy of the Lower and Middle Ordovician succession of the Yangtze Platform, China |
| title_sort | high resolution carbon isotope stratigraphy of the lower and middle ordovician succession of the yangtze platform china |
| topic | lower and middle ordovician carbon isotopes chemostratigraphy yangtze platform south china |
| url | https://kirj.ee/wp-content/plugins/kirj/pub/earth-1-2023-165_20230614071328.pdf |
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