干旱区生态环境知识资源中心(Arid): Limited oxygen production in the Mesoarchean ocean

Arid

DOI	10.1073/pnas.1818762116
	Limited oxygen production in the Mesoarchean ocean
	Ossa, Frantz Ossa 1,2; Hofmann, Axel 2; Spangenberg, Jorge E.3; Poulton, Simon W.4; Stueken, Eva E.5; Schoenberg, Ronny 1; Eickmann, Benjamin 1,2; Wille, Martin 6; Butler, Mike 7; Bekker, Andrey 2,8
通讯作者	Ossa, Frantz Ossa
来源期刊	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN	0027-8424
出版年	2019
卷号	116 期号:14 页码:6647-6652
英文摘要	The Archean Eon was a time of predominantly anoxic Earth surface conditions, where anaerobic processes controlled bioessential element cycles. In contrast to oxygen oases well documented for the Neoarchean [2.8 to 2.5 billion years ago (Ga)], the magnitude, spatial extent, and underlying causes of possible Mesoarchean (3.2 to 2.8 Ga) surface-ocean oxygenation remain controversial. Here, we report delta N-15 and delta C-13 values coupled with local seawater redox data for Mesoarchean shales of the Mozaan Group (Pongola Supergroup, South Africa) that were deposited during an episode of enhanced Mn (oxyhydr)oxide precipitation between similar to 2.95 and 2.85 Ga. Iron and Mn redox systematics are consistent with an oxygen oasis in the Mesoarchean anoxic ocean, but delta N-15 data indicate a Mo-based diazotrophic biosphere with no compelling evidence for a significant aerobic nitrogen cycle. We propose that in contrast to the Neoarchean, dissolved O-2 levels were either too low or too limited in extent to develop a large and stable nitrate reservoir in the Mesoarchean ocean. Since biological N-2 fixation was evidently active in this environment, the growth and proliferation of O-2-producing organisms were likely suppressed by nutrients other than nitrogen (e.g., phosphorus), which would have limited the expansion of oxygenated conditions during the Mesoarchean.
英文关键词	oxygen oasis nitrogen isotopes nutrient limitation oxygenic photosynthesis Mesoarchean
类型	Article
语种	英语
国家	Germany ; South Africa ; Switzerland ; England ; Scotland ; USA
开放获取类型	Green Accepted, Green Published, Bronze
收录类别	SCI-E
WOS记录号	WOS:000463069900028
WOS关键词	ISOTOPIC EVIDENCE ; NITROGEN-CYCLE ; PONGOLA SUPERGROUP ; IRON FORMATIONS ; SOUTH-AFRICA ; GREEN RUST ; EVOLUTION ; PHOSPHORUS ; SIGNATURES ; MANGANESE
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218173
作者单位	1.Univ Tubingen, Dept Geosci, D-72074 Tubingen, Germany; 2.Univ Johannesburg, Dept Geol, ZA-2092 Johannesburg, South Africa; 3.Univ Lausanne, Inst Earth Surface Dynam, CH-1015 Lausanne, Switzerland; 4.Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England; 5.Univ St Andrews, Sch Earth & Environm Sci, St Andrews KY16 9AL, Fife, Scotland; 6.Univ Bern, Inst Geol Sci, CH-3012 Bern, Switzerland; 7.IThemba LABS, Environm Isotope Lab, ZA-2050 Johannesburg, South Africa; 8.Univ Calif Riverside, Dept Earth Sci, Riverside, CA 92521 USA
推荐引用方式 GB/T 7714	Ossa, Frantz Ossa,Hofmann, Axel,Spangenberg, Jorge E.,et al. Limited oxygen production in the Mesoarchean ocean[J],2019,116(14):6647-6652.
APA	Ossa, Frantz Ossa.,Hofmann, Axel.,Spangenberg, Jorge E..,Poulton, Simon W..,Stueken, Eva E..,...&Bekker, Andrey.(2019).Limited oxygen production in the Mesoarchean ocean.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,116(14),6647-6652.
MLA	Ossa, Frantz Ossa,et al."Limited oxygen production in the Mesoarchean ocean".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 116.14(2019):6647-6652.