Millennial-timescale thermogenic CO2 release preceding the Paleocene-Eocene Thermal Maximum
文献类型： 外文期刊
作者： Jiang, Shijun 1 ; Cui, Ying 3 ; Wang, Yasu 1 ; De Palma, Maurizia 3 ; Naafs, B. David A. 4 ; Jiang, Jingxin 6 ; Hu, Xiumian 6 ; Wu, Huaichun 7 ; Chu, Runjian 7 ; Gu, Yangguang 8 ; Wang, Jiuyuan 9 ; Huang, Yizhou 4 ; Ingalls, Miquela 10 ; Bralower, Timothy J. 10 ; Yang, Shiling 11 ; Zachos, James C. 12 ; Ridgwell, Andy 13 ;
作者机构： 1.Hainan Univ, State Key Lab Marine Resource Utilizat South China, Haikou, Peoples R China
2.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai, Peoples R China
3.Montclair State Univ, Dept Earth & Environm Studies, Montclair, NJ 07043 USA
4.Univ Bristol, Sch Chem, Organ Chem Unit, Bristol, England
5.Univ Bristol, Sch Earth Sci, Bristol, England
6.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Crit Earth Mat Cycling & Mineral Dep, Nanjing, Peoples R China
7.China Univ Geosci Beijing, Sch Ocean Sci, Beijing, Peoples R China
8.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou, Peoples R China
9.Peking Univ, Sch Earth & Space Sci, SKLab DeepMinE, MOEKLab OBCE, Beijing, Peoples R China
10.Penn State Univ, Dept Geosci, University Pk, PA USA
11.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher & Environm Coevolut, Beijing, Peoples R China
12.Univ Calif Santa Cruz, Dept Earth & Planetary Sci, Santa Cruz, CA USA
13.Univ Calif Riverside, Dept Earth & Planetary Sci, Riverside, CA USA
期刊名称：NATURE COMMUNICATIONS （ 影响因子：15.7； 五年影响因子：17.2 ）
ISSN：
年卷期： 2025 年 16 卷 1 期
页码：
收录情况： SCI
摘要： Geologic records support a short-lived carbon release, known as the pre-onset excursion (POE), shortly before the Paleocene-Eocene Thermal Maximum (PETM; similar to 56 Ma). However, the source and pace of the POE carbon release and its relationship to the PETM remain unresolved. Here we show a high-temporal-resolution stratigraphic record spanning the POE and PETM from the eastern Tethys Ocean that documents the evolution of surface ocean carbon cycle, redox and eutrophication, confirming the global nature of the POE. Biomarkers extracted from the sedimentary record indicate a smaller environmental perturbation during the POE than that during the PETM in the eastern Tethys Ocean. Earth system modeling constrained by observed delta C-13 and pH data indicates that the POE was driven by a largely thermogenic CO2 source, likely associated with sill intrusions prior to the main eruption phase of the North Atlantic Igneous Province and possibly biogeochemical feedbacks involving the release of biogenic methane.
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