Sedimentary facies controlled biogeochemical process of biotic extinction and turnover across the Cambrian SPICE event
文献类型：期刊论文
| 作者 | Wang, Haozhe1,2; Zhang, Haizu3; Zhang, Yiman2,4; Cheng, Bin2; Deng, Qian2; Wang, Donghui2,4; Zhao, Guanyu2,4; Liao, Zewen2 |
| 刊名 | COMMUNICATIONS EARTH & ENVIRONMENT
 |
| 出版日期 | 2024-11-08 |
| 卷号 | 5期号:1页码:9 |
| DOI | 10.1038/s43247-024-01856-z |
| 英文摘要 | The Steptoean positive carbon isotope excursion (SPICE) event, one of the largest carbon cycle perturbations in the Cambrian, coincides with shallow-shelf-fauna extinction and plankton revolution (critical transition of plankton). The event is globally documented, but biogeochemical responses of these biotic evolutions in varying facies environments are not well understood. Here high-resolution paired delta 18Ocarb, delta 13Ccarb and delta 13Corg datasets from varied paleodepth environments in the Tarim Basin, NW China reveal facies-dependent signatures of the event, with globally synchronous patterns but notable intra-basinal variability. Shallow marine facies record the end-Marjuman extinction with a distinct negative delta 13Corg excursion prior to the event, while the transitional facies region marks twice positive delta 13C excursions corresponding to an asynchronous plankton revolution from shallow and deep areas during the event. The varying isotope responses are interpreted in the context of primary productivity and redox conditions, with deeper basins recording more 13C enriched signals (i.e., higher delta 13C) due to greater organic matter preservation under anoxic conditions, compared to the platform area. The biotic extinction, the planktonic revolution and the interaction of organisms along the shallow to deep marine depth gradient were reflected by the significant isotopic shifts recorded during the event, suggesting depth-dependent biogeochemical processes that shaped marine ecosystems. Biogeochemical responses to one of the largest carbon cycle perturbations taking place 497 to 494 million years ago, show variability within sedimentary basins and reflect primary productivity and redox conditions, according to high-resolution carbon and oxygen isotope analyses from the Tarim Basin, China. |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001352353500005 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/82046]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Cheng, Bin; Liao, Zewen |
| 作者单位 | 1.Minist Nat Resources, Key Lab Marine Mineral Resources, Guangzhou Marine Geol Survey, China Geol Survey, Guangzhou 511458, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 3.PetroChina Tarim Oilfield Co, Res Inst Petr Explorat & Dev, Korla 841000, Peoples R China 4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Haozhe,Zhang, Haizu,Zhang, Yiman,et al. Sedimentary facies controlled biogeochemical process of biotic extinction and turnover across the Cambrian SPICE event[J]. COMMUNICATIONS EARTH & ENVIRONMENT,2024,5(1):9. |
| APA | Wang, Haozhe.,Zhang, Haizu.,Zhang, Yiman.,Cheng, Bin.,Deng, Qian.,...&Liao, Zewen.(2024).Sedimentary facies controlled biogeochemical process of biotic extinction and turnover across the Cambrian SPICE event.COMMUNICATIONS EARTH & ENVIRONMENT,5(1),9. |
| MLA | Wang, Haozhe,et al."Sedimentary facies controlled biogeochemical process of biotic extinction and turnover across the Cambrian SPICE event".COMMUNICATIONS EARTH & ENVIRONMENT 5.1(2024):9. |
入库方式： OAI收割
来源：广州地球化学研究所
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