Tracking the evolution of seawater Mo isotopes through the Ediacaran-Cambrian transition

doi:10.1016/j.precamres.2020.105929

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋地质与环境重点实验室

	Tracking the evolution of seawater Mo isotopes through the Ediacaran-Cambrian transition
	Ye, Yuntao 5; Wang, Huajian 5; Wang, Xiaomei 5; Zhai, Lina 4; Wu, Chaodong 2,3; Canfield, Donald E.1,5; Zhang, Shuichang 5
刊名	PRECAMBRIAN RESEARCH
	2020-11-01
卷号	350 页码:11
关键词	Molybdenum Ocean oxygenation Doushantuo formation Jiumenchong formation Ediacaran-Cambrian South China
ISSN号	0301-9268
DOI	10.1016/j.precamres.2020.105929
通讯作者	Zhang, Shuichang(sczhang@petrochina.com.cn)
英文摘要	The rapid increase in animal diversity and abundance over the Ediacaran-Cambrian boundary has been attributed to, among other parameters, pronounced Earth surface oxygenation at that time. However, whether atmospheric oxygen elevated to modern levels, or whether the extent was smaller and oxygen remained relatively muted until the late Paleozoic is currently debated. Here, we present new Mo isotope datasets of drill core material for two key black shale units (the Ediacaran Doushantuo Formation and the lower Cambrian Jiumenchong Formation), located on the Yangtze Block. These data capture a 0.7 parts per thousand isotope fractionation between sediments experiencing quantitative and non-quantitative Mo removal. By identifying this offset, we provide integrated estimates for global seawater Mo isotope compositions during the deposition of these two formations (similar to 1.2-1.4 parts per thousand and similar to 1.8-2 parts per thousand, respectively). When paired with a mass balance model, our results indicate that a large proportion of the early Cambrian ocean was bathed under oxic waters. We also discuss how recent discoveries have provided insights into the geochemical processes underpinning the oxygenation of the oceans.
资助项目	National Key Research and Development Program of China[2017YFC0603101] ; National Science and Technology Major Project of the Ministry of Science and Technology of China[2016ZX05004001] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA14010101] ; National Natural Science Foundation of China[41530317] ; National Natural Science Foundation of China[41872125] ; Villum Foundation[16518]
WOS研究方向	Geology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000589423600041
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/169368]
专题	海洋研究所_海洋地质与环境重点实验室
通讯作者	Zhang, Shuichang
作者单位	1.Univ Southern Denmark, Dept Biol, Nordcee, DK-5230 Odense M, Denmark 2.Peking Univ, Inst Oil & Gas, Beijing 100871, Peoples R China 3.Peking Univ, Sch Earth & Space Sci, Key Lab Orogen Belts & Crustal Evolut, Minist Educ, Beijing 100871, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 5.China Natl Petr Corp, Key Lab Petr Geochem, Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Ye, Yuntao,Wang, Huajian,Wang, Xiaomei,et al. Tracking the evolution of seawater Mo isotopes through the Ediacaran-Cambrian transition[J]. PRECAMBRIAN RESEARCH,2020,350:11.
APA	Ye, Yuntao.,Wang, Huajian.,Wang, Xiaomei.,Zhai, Lina.,Wu, Chaodong.,...&Zhang, Shuichang.(2020).Tracking the evolution of seawater Mo isotopes through the Ediacaran-Cambrian transition.PRECAMBRIAN RESEARCH,350,11.
MLA	Ye, Yuntao,et al."Tracking the evolution of seawater Mo isotopes through the Ediacaran-Cambrian transition".PRECAMBRIAN RESEARCH 350(2020):11.