气候变化领域集成服务门户(CCPortal): The Early Devonian Xitun Vertebrate Fauna in South China inhabited a shallow marine environment with changing salinity

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DOI	10.1144/jgs2023-146
	The Early Devonian Xitun Vertebrate Fauna in South China inhabited a shallow marine environment with changing salinity
	Cai, Jiachen; Sun, Haoran; Zhao, Wenjin; Wang, Jianhua; Zhu, Min
发表日期	2024
ISSN	0016-7649
EISSN	2041-479X
起始页码	181
结束页码	3
卷号	181 期号:3
英文摘要	The Early Devonian Xitun Vertebrate Fauna, represented by early members of crown sarcopterygians, such as Youngolepis, Diabolepis, Psarolepis, Achoania and Styloichthys, is mainly hosted in the Xitun Formation in the Qujing area, East Yunnan of China. Despite numerous research articles describing taxa from this famous Lochkovian fauna and its sedimentary and tectonic environments, there is no objective and coherent interpretation of the palaeoenvironment in which these early vertebrates lived. Based on detailed field geological investigation in recent years in the surrounding areas of Qujing City and measurements from the Xitun Formation section, this paper focuses on the analysis of some geochemistry indices of major, trace and rare earth elements to accurately elucidate the sedimentary environment of the Xitun Formation and deepen our understanding of the relationship between Early Devonian fishes and the environment. The analyses of the sensitive geochemistry indices of depositional and tectonic settings, sedimentary provenance, weathering, palaeoclimate, palaeosalinity and palaeoredox conditions indicate that the Lower Devonian Xitun Formation in East Yunnan was mainly deposited in a shallow marine setting with three phases of seawater-freshwater influx under a warm and humid climate, and a stable, oxygen-rich condition, which promoted the flourishing of Early Devonian marine fishes. Supplementary material: Data on the major (Table A), trace (Table B) and rare earth (Table C) elements are available at https://doi.org/10.6084/m9.figshare.c.7020642 Thematic collection: This article is part of the Chemical Evolution of the Mid-Paleozoic Earth System and Biotic Response collection available at: https://www.lyellcollection.org/topic/collections/chemical-evolution-of-the-mid-paleozoic-earth-system
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001182479100001
来源期刊	JOURNAL OF THE GEOLOGICAL SOCIETY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/300472
作者单位	Chinese Academy of Sciences; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Qujing Normal University
推荐引用方式 GB/T 7714	Cai, Jiachen,Sun, Haoran,Zhao, Wenjin,et al. The Early Devonian Xitun Vertebrate Fauna in South China inhabited a shallow marine environment with changing salinity[J],2024,181(3).
APA	Cai, Jiachen,Sun, Haoran,Zhao, Wenjin,Wang, Jianhua,&Zhu, Min.(2024).The Early Devonian Xitun Vertebrate Fauna in South China inhabited a shallow marine environment with changing salinity.JOURNAL OF THE GEOLOGICAL SOCIETY,181(3).
MLA	Cai, Jiachen,et al."The Early Devonian Xitun Vertebrate Fauna in South China inhabited a shallow marine environment with changing salinity".JOURNAL OF THE GEOLOGICAL SOCIETY 181.3(2024).