干旱区生态环境知识资源中心(Arid): Continental records of organic carbon isotopic composition (delta C-13(org)), weathering, paleoclimate and wildfire linked to the End-Permian Mass Extinction

Arid

DOI	10.1016/j.chemgeo.2020.119764
	Continental records of organic carbon isotopic composition (delta C-13(org)), weathering, paleoclimate and wildfire linked to the End-Permian Mass Extinction
	Lu, Jing; Zhang, Peixin; Yang, Minfang; Shao, Longyi; Hilton, Jason
通讯作者	Lu, J
来源期刊	CHEMICAL GEOLOGY
ISSN	0009-2541
EISSN	1872-6836
出版年	2020
卷号	558
英文摘要	The late Permian was the acme of Pangea assembly, with collision and subduction of global plates accompanied by major changes in atmospheric composition, paleoclimates and paleoenvironments of the Earth's surface system. These events are extensively recorded in marine successions from the Tethys, but much less are known from continental successions that typically lack high-resolution stratigraphic control. In order to reveal these fluctuations in terrestrial strata and their relationship with the End-Permian Mass Extinction (EPME), we investigate continental delta C-13(org), mercury and nickel concentrations, wildfire, and climate change proxies from the late Permian Changhsingian stage to Early Triassic Induan stage in the Yuzhou coalfield in the North China Plate (NCP). Results show two negative organic carbon isotope excursions (CIE) within the Changhsingian aged Sunjiagou Formation, the first (CIE-I, 2.2 parts per thousand) during mid-Changhsingian and a second, larger, excursion (CIE-II, 2.7 parts per thousand) near the end of the Changhsingian that coincides with the peaks in the Chemical Index of Alteration (CIA) value and extinction of plant species. We infer CIE-II to be the global negative excursion of delta C-13(org) associated with the EPME. Arid climates prevailed in the study area from the Changhsingian to the early Induan inferred from the low kaolinite contents and weak continental weathering, except for two short-duration episodes with higher humidity that correspond with CIE-I and CIE-II. Extremely high fusinite content ((x) over bar = 63.1%) and its increasing abundance through the Changhsingian indicates that frequent wildfires may have been a direct cause for both the destruction of terrestrial vegetation ecosystems and the rapid decline of terrestrial biodiversity at the EPME. We consider that terrestrial ecosystems may have played an important role in the extinction of marine communities at the EPME. This represents the first time the EMPE has been demonstrated in the NCP based on combined evidence from negative carbon isotope excursion, concurrent weathering trends, Ni/Al ratio and biotic extinctions, representing an important step in accurately identifying and correlating the EPME in continental settings from the NCP.
英文关键词	Terrestrial strata Organic carbon isotope composition Weathering Palaeoclimate Wildfire End-Permian Mass Extinction North China Plate
类型	Article
语种	英语
开放获取类型	hybrid, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000599667400004
WOS关键词	TRIASSIC BOUNDARY ; NORTH CHINA ; CRISIS ; ANOXIA ; PRODUCTIVITY ; CLIMATE ; OCEAN ; PROVINCES ; TECTONICS ; EVOLUTION
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327905
作者单位	[Lu, Jing; Zhang, Peixin; Shao, Longyi] China Univ Min & Technol, Coll Geosci & Surveying Engn, State Key Lab Coal Resources & Safe Min, Beijing 100083, Peoples R China; [Yang, Minfang] PetroChina, Petr Explorat & Dev Res Inst, Beijing 100083, Peoples R China; [Hilton, Jason] Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham B15 2TT, W Midlands, England
推荐引用方式 GB/T 7714	Lu, Jing,Zhang, Peixin,Yang, Minfang,et al. Continental records of organic carbon isotopic composition (delta C-13(org)), weathering, paleoclimate and wildfire linked to the End-Permian Mass Extinction[J],2020,558.
APA	Lu, Jing,Zhang, Peixin,Yang, Minfang,Shao, Longyi,&Hilton, Jason.(2020).Continental records of organic carbon isotopic composition (delta C-13(org)), weathering, paleoclimate and wildfire linked to the End-Permian Mass Extinction.CHEMICAL GEOLOGY,558.
MLA	Lu, Jing,et al."Continental records of organic carbon isotopic composition (delta C-13(org)), weathering, paleoclimate and wildfire linked to the End-Permian Mass Extinction".CHEMICAL GEOLOGY 558(2020).