Driver of eustatic change during the early Aptian Oceanic Anoxic Event 1a (-120 Ma)

doi:10.1016/j.gloplacha.2023.104236

	Driver of eustatic change during the early Aptian Oceanic Anoxic Event 1a (-120 Ma)
	Xu, Yiwei 5,6,7; Hu, Xiumian 5; Garzanti, Eduardo 4; Sun, Gaoyuan 3; Jiang, Jingxin 5; Li, Juan 6,7; Zhang, Shijie 2; Schlagintweit, Felix 1
刊名	GLOBAL AND PLANETARY CHANGE
	2023-10-01
卷号	229 页码:16
关键词	Eustasy OAE1a Carbonate platform Iran Dariyan Formation Eustasy OAE1a Carbonate platform Iran Dariyan Formation
ISSN号	0921-8181
DOI	10.1016/j.gloplacha.2023.104236
通讯作者	Hu, Xiumian(huxm@nju.edu.cn)
英文摘要	Sea-level changes exert an important control on oceanic circulation and climate evolution. Researchers have proposed that sea-level rise favored accumulation of sediments enriched in organic carbon during oceanic anoxic events (OAEs), although high-frequency sea-level changes and their controlling mechanism have remained poorly constrained. Here we present a detailed sedimentological and geochemical study on Aptian (Lower Cretaceous) shallow-water carbonates of the Dariyan Formation exposed in the Zagros fold belt of southern Iran. Microfacies analysis reveals that a regression occurred during carbon isotopic stages C3-C4, followed by a transgression during stages C6-C7. Frequency analysis of carbonate allochems indicates a transition from rudists and other skeletal grains to microbial grains with reduced bioturbation during regression at late C3-C5 stages, whereas the opposite occurred during transgression at stages C6-C7. In the transition interval (C3-C5) nutrients (P, Ba) and redox indicators (Ce anomaly and U concentration) document low nutrient levels and oxygen-rich sea waters, suggesting sea-level changes, rather than by seawater chemistry control. Worldwide correlation of relative sea-level changes across Tethyan, Northern Atlantic, Pacific and Arctic areas is consistent with regression followed by transgression during OAE1a. The regression and transgression occurred at a period of climatic warming and cooling respectively, suggesting that aquifer-eustasy rather than thermo-eustasy or glacio-eustasy may have represented the main cause of eustatic changes.
资助项目	National Natural Science Foundation of China[41888101] ; National Natural Science Foundation of China[42072124] ; National Natural Science Foundation of China[42072117] ; National Natural Science Foundation of China[42202118] ; Open Research Fund of State Key Laboratory of Mineral Deposit Research at Nanjing University[2023-LAMD-K10] ; Jiangsu Funding Program for Excellent Postdoctoral Talent
WOS关键词	CARBON-ISOTOPE STRATIGRAPHY ; SEA-LEVEL FLUCTUATIONS ; SOUTHERN TETHYAN MARGIN ; SEQUENCE STRATIGRAPHY ; PLATFORM EVOLUTION ; DROWNING EVENTS ; BASIN ; OXYGENATION ; PHOSPHORUS ; CHEMISTRY
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:001155193800001
资助机构	National Natural Science Foundation of China ; Open Research Fund of State Key Laboratory of Mineral Deposit Research at Nanjing University ; Jiangsu Funding Program for Excellent Postdoctoral Talent
内容类型	期刊论文
源URL	[http://ir.nigpas.ac.cn/handle/332004/43010]
专题	中国科学院南京地质古生物研究所
通讯作者	Hu, Xiumian
作者单位	1.Lerchenauerstr 167, D-80935 Munich, Germany 2.Henan Normal Univ, Coll Tourism, Xinxiang 453000, Peoples R China 3.Hohai Univ, Coll Oceanog, Nanjing 210098, Peoples R China 4.Univ Milano Bicocca, Dept Earth & Environm Sci, I-20126 Milan, Italy 5.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210023, Peoples R China 6.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironment, Nanjing 210008, Peoples R China 7.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Xu, Yiwei,Hu, Xiumian,Garzanti, Eduardo,et al. Driver of eustatic change during the early Aptian Oceanic Anoxic Event 1a (-120 Ma)[J]. GLOBAL AND PLANETARY CHANGE,2023,229:16.
APA	Xu, Yiwei.,Hu, Xiumian.,Garzanti, Eduardo.,Sun, Gaoyuan.,Jiang, Jingxin.,...&Schlagintweit, Felix.(2023).Driver of eustatic change during the early Aptian Oceanic Anoxic Event 1a (-120 Ma).GLOBAL AND PLANETARY CHANGE,229,16.
MLA	Xu, Yiwei,et al."Driver of eustatic change during the early Aptian Oceanic Anoxic Event 1a (-120 Ma)".GLOBAL AND PLANETARY CHANGE 229(2023):16.