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  4. 中国科学院新生代地质与环境重点实验室
Carbon, oxygen and strontium isotopic and elemental characteristics of the Cambrian Longwangmiao Formation in South China: Paleoenvironmental significance and implications for carbon isotope excursions

文献类型：期刊论文

作者Zhang, Pengyuan1,2; Wang, Yongli1,2,3; Zhang, Xiaojun4; Wei, Zhifu2,5; Wang, Gen2,5; Zhang, Ting2,5; Ma, He1,5; Wei, Jingyi1,2; He, Wei2,5; Ma, Xueyun2,5
刊名GONDWANA RESEARCH
出版日期2022-06-01
卷号106页码:174-190
关键词Isotope geochemistry Paleoenvironment Redlichiid-Olenellid Extinction Carbon Isotope Excursion Cambrian Toyonian South China
ISSN号1342-937X
DOI10.1016/j.gr.2022.01.008
英文摘要The biosphere experienced episodic perturbations during the Neoproterozoic-early Cambrian, accompanied by major fluctuations of the carbon cycle. However, compared to the Ediacaran-early Cambrian, geochemical records of the Cambrian Toyonian Stage (Longwangmiao), which contains the significant Redlichiid-Olenellid Extinction Carbon Isotope Excursion (ROECE), are scarce. To address this data gap, we conducted measurements of carbon, oxygen and strontium isotopes and element contents of a continuous series of carbonate samples from the Longwangmiao Formation of Well HS2, located in the central Sichuan Basin of South China. Our specific aims were to reconstruct the paleoenvironment and to determine the origin of the ROECE. Strict sample screening was used to ensure that the isotopes and elements were not affected by diagenesis. The Sr-87/Sr-86 values of Well HS2, and for sites elsewhere, show that sea level gradually decreased during the Cambrian Toyonian Stage. Additionally, the pronounced negative delta C-13 excursion in the late Toyonian is globally associated with the ROECE, which is widely thought to have resulted from extinctions caused by a transgression. However, a transgression is not shown in the Sr-87/Sr-86 profile of Well HS2, which we attribute to local karst formation and erosion caused by frequent regional regressions. The interrelationships among several paleoenvironmental proxies show that continental weathering was climatically controlled, which affected the supply of terrigenous detritus, and that the carbonate platform was semi-restricted. Furthermore, profiles of paleoenvironmental proxies indicate that the environment was warm and humid, favoring high biological productivity and diversity during Interval I (early Toyonian), and that it gradually became colder and drier during Interval II (middle Toyonian). We suggest that by the time of Interval III (late Toyonian), the adverse effects of a cold and arid environment were superimposed on the transgression, triggering the ROECE. Our results provide a reference and possible interpretation for other carbon isotope excursion events. (C) 2022 Published by Elsevier B.V. on behalf of International Association for Gondwana Research.
WOS关键词FORMATION STAGE 4 ; YANGTZE PLATFORM ; SR-ISOTOPE ; OCEAN CHEMISTRY ; RADIOGENIC SR ; C-ISOTOPE ; BOUNDARY ; EVOLUTION ; EDIACARAN ; TRANSITION
资助项目National Natural Science Foun-dation of China[41831176] ; Second Tibetan Plateau Scientifc Expedition and Research (STEP) Program[2019QZKK0707] ; Strategic Priority Research Program of CAS[XDB26000000] ; National Natural Science Foundation of China[41902028] ; National Natural Science Foundation of China[41972030] ; National Natural Science Foundation of China[42072038] ; National Key R&D Program of China[2017YFA0604803] ; CAS "Light of West China" Program ; Youth Innovation Promotion Association CAS[2021425]
WOS研究方向Geology
语种英语
WOS记录号WOS:000752737500004
出版者ELSEVIER
资助机构National Natural Science Foun-dation of China ; National Natural Science Foun-dation of China ; National Natural Science Foun-dation of China ; National Natural Science Foun-dation of China ; Second Tibetan Plateau Scientifc Expedition and Research (STEP) Program ; Second Tibetan Plateau Scientifc Expedition and Research (STEP) Program ; Second Tibetan Plateau Scientifc Expedition and Research (STEP) Program ; Second Tibetan Plateau Scientifc Expedition and Research (STEP) Program ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; National Natural Science Foun-dation of China ; National Natural Science Foun-dation of China ; National Natural Science Foun-dation of China ; National Natural Science Foun-dation of China ; Second Tibetan Plateau Scientifc Expedition and Research (STEP) Program ; Second Tibetan Plateau Scientifc Expedition and Research (STEP) Program ; Second Tibetan Plateau Scientifc Expedition and Research (STEP) Program ; Second Tibetan Plateau Scientifc Expedition and Research (STEP) Program ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; National Natural Science Foun-dation of China ; National Natural Science Foun-dation of China ; National Natural Science Foun-dation of China ; National Natural Science Foun-dation of China ; Second Tibetan Plateau Scientifc Expedition and Research (STEP) Program ; Second Tibetan Plateau Scientifc Expedition and Research (STEP) Program ; Second Tibetan Plateau Scientifc Expedition and Research (STEP) Program ; Second Tibetan Plateau Scientifc Expedition and Research (STEP) Program ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; National Natural Science Foun-dation of China ; National Natural Science Foun-dation of China ; National Natural Science Foun-dation of China ; National Natural Science Foun-dation of China ; Second Tibetan Plateau Scientifc Expedition and Research (STEP) Program ; Second Tibetan Plateau Scientifc Expedition and Research (STEP) Program ; Second Tibetan Plateau Scientifc Expedition and Research (STEP) Program ; Second Tibetan Plateau Scientifc Expedition and Research (STEP) Program ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS
源URL[http://ir.iggcas.ac.cn/handle/132A11/104915]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
地质与地球物理研究所_兰州油气中心
通讯作者Wang, Yongli
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China
4.Res Inst Petr Explorat & Dev, Northwest Branch, Lanzhou, Peoples R China
5.Chinese Acad Sci, Gansu Prov Northwest Inst Ecoenvironm & Resources, Key Lab Petr Resources, Lanzhou, Peoples R China
6.China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Pengyuan,Wang, Yongli,Zhang, Xiaojun,et al. Carbon, oxygen and strontium isotopic and elemental characteristics of the Cambrian Longwangmiao Formation in South China: Paleoenvironmental significance and implications for carbon isotope excursions[J]. GONDWANA RESEARCH,2022,106:174-190.
APA Zhang, Pengyuan.,Wang, Yongli.,Zhang, Xiaojun.,Wei, Zhifu.,Wang, Gen.,...&Zhu, Chenxi.(2022).Carbon, oxygen and strontium isotopic and elemental characteristics of the Cambrian Longwangmiao Formation in South China: Paleoenvironmental significance and implications for carbon isotope excursions.GONDWANA RESEARCH,106,174-190.
MLA Zhang, Pengyuan,et al."Carbon, oxygen and strontium isotopic and elemental characteristics of the Cambrian Longwangmiao Formation in South China: Paleoenvironmental significance and implications for carbon isotope excursions".GONDWANA RESEARCH 106(2022):174-190.

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来源：地质与地球物理研究所

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