气候变化领域集成服务门户(CCPortal): Global carbon cycle perturbations triggered by volatile volcanism and ecosystem responses during the Carnian Pluvial Episode (late Triassic)

CCPortal

DOI	10.1016/j.earscirev.2020.103404
	Global carbon cycle perturbations triggered by volatile volcanism and ecosystem responses during the Carnian Pluvial Episode (late Triassic)
	Li Z.; Chen Z.-Q.; Zhang F.; Ogg J.G.; Zhao L.
发表日期	2020
ISSN	0012-8544
卷号	211
英文摘要	The Carnian Pluvial Episode (CPE) was a dramatic climatic event during the early Late Triassic. The CPE has been recognized worldwide and is marked by the termination of carbonate platform successions and by pronounced negative δ13C excursions (denoted as the CPE excursion). The onset of the CPE has been proposed to be linked with the volatile eruption of the Wrangellia Large Igneous Province (W-LIP). However, this extreme climatic event remains disputed in terms of its precise global correlation, timing of onset, duration, and global magnitude. We compiled a database of 13 conodont biozone-controlled stable-isotope reference sections throughout the Tethyan region. After a reexamination of previously published conodont taxonomy from each section, the statistics on the conodont assemblages/zones yield a global set of 17 high-resolution conodont Unitary Association Zones (UAZs) spanning the entire Carnian successions. A set of age-tie points placed an age model on this global UAZ scale. We added paired δ13Ccarb and δ13Corg data from two sections in South China to other records in this global database, and then normalized all carbon-isotope datasets. A pronounced negative δ13Ccarb excursion with a magnitude of −2± 0.5‰ (from an average of ~3‰ to ~1‰) is evident in these normalized trends and is recognized around the entire Tethys realm. The CPE excursion coincides with conodont UAZ-4 (~234 Ma) through UAZ-8 (within the Mazzaella carnica and Paragondolella praelindae zones, Julian2) and has a duration of ca. 1.5 Myr. We note that an apparent delayed onset of the CPE excursion in South China relative to elsewhere in the Tethys as suggested by previous studies may have been an artifact caused by incomplete conodont-stratigraphic records and/or irregularities in taxonomic identification. A carbon and phosphorus cycle model highlight the strong relationship between the eruption of the W-LIP and CPE excursion; however, the estimated amount of CO2volatiles released by the W-LIP would directly account for only ~25% of the total amount of light‑carbon required to explain the combined magnitude and duration of the global CPE excursion. © 2020 Elsevier B.V.
英文关键词	C-P cycle model; Carbon isotopes; Carbonate factory demise; Conodont Unitary Association zones; South China; Wrangellia LIP
语种	英语
scopus关键词	biostratigraphy; biozonation; carbon cycle; conodont; ecosystem response; large igneous province; paleoclimate; paleoecology; paleoenvironment; phosphorus cycle; trigger mechanism; volcanic eruption; volcanism; China; Mazzaella
来源期刊	EARTH-SCIENCE REVIEWS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/209473
作者单位	State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan, Hubei 430074, China; State Key Laboratory of Biogeology and Environmental Geology, School of Earth Sciences, China University of Geosciences, Wuhan, Hubei 430074, China; State Key Laboratory of Mineral Deposits Research and School of Earth Sciences and Engineering, Nanjing University, Nanjing, 210023, China; State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, Sichuan 610059, China; Department of Earth, Atmospheric and Planetary Sciences, Purdue University, West Lafayette, IN 47907-2051, United States
推荐引用方式 GB/T 7714	Li Z.,Chen Z.-Q.,Zhang F.,et al. Global carbon cycle perturbations triggered by volatile volcanism and ecosystem responses during the Carnian Pluvial Episode (late Triassic)[J],2020,211.
APA	Li Z.,Chen Z.-Q.,Zhang F.,Ogg J.G.,&Zhao L..(2020).Global carbon cycle perturbations triggered by volatile volcanism and ecosystem responses during the Carnian Pluvial Episode (late Triassic).EARTH-SCIENCE REVIEWS,211.
MLA	Li Z.,et al."Global carbon cycle perturbations triggered by volatile volcanism and ecosystem responses during the Carnian Pluvial Episode (late Triassic)".EARTH-SCIENCE REVIEWS 211(2020).