干旱区生态环境知识资源中心(Arid): Evidence for benthic oxygen production in Neoarchean lacustrine stromatolites

Arid

DOI	10.1130/G49894.1
	Evidence for benthic oxygen production in Neoarchean lacustrine stromatolites
	Wilmeth, Dylan T.; Lalonde, Stefan, V; Berelson, William M.; Petryshyn, Victoria; Celestian, Aaron J.; Beukes, Nicolas J.; Awramik, Stanley M.; Spear, John R.; Mahseredjian, Taleen; Corsetti, Frank A.
通讯作者	Wilmeth, DT
来源期刊	GEOLOGY
ISSN	0091-7613
EISSN	1943-2682
出版年	2022
卷号	50 期号:8 页码:907-911
英文摘要	The evolution of oxygenic photosynthesis fundamentally altered the global environment, but the history of this metabolism prior to the Great Oxidation Event (GOE) at ca. 2.4 Ga remains unclear. Increasing evidence suggests that non-marine microbial mats served as localized oxygen oases for hundreds of millions of years before the GOE, though direct examination of redox proxies in Archean lacustrine microbial deposits remains relatively limited. We report spatially distinct patterns of positive and negative cerium (Ce) anomalies in lacustrine stromatolites from the 2.74 Ga Ventersdorp Supergroup (Hartbeesfontein Basin, South Africa), which indicate that dynamic redox conditions within ancient microbial communities were driven by oxygenic photosynthesis. Petrographic analyses and rare earth element signatures support a primary origin for Ce anomalies in stromatolite oxides. Oxides surrounding former bubbles entrained in mats (preserved as fenestrae) exhibit positive Ce anomalies, while oxides in stromatolite laminae typically contain strong negative Ce anomalies. The spatial patterns of Ce anomalies in Ventersdorp stromatolites are most parsimoniously explained by localized Ce oxidation and scavenging around oxygen bubbles produced by photosynthesis in microbial mats. Our new data from Ventersdorp stromatolites supports the presence of oxygenic photosynthesis similar to 300 m.y. before the GOE, and add to the growing evidence for early oxygen oases in Archean non-marine deposits.
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:000798263100001
WOS关键词	RARE-EARTH-ELEMENTS ; VENTERSDORP SUPERGROUP ; ATMOSPHERIC OXYGEN ; MICROBIAL MATS ; GEOCHEMISTRY ; EVOLUTION ; PHOTOSYNTHESIS ; CHEMISTRY ; DEPOSITS ; ORIGIN
WOS类目	Geology
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392938
推荐引用方式 GB/T 7714	Wilmeth, Dylan T.,Lalonde, Stefan, V,Berelson, William M.,et al. Evidence for benthic oxygen production in Neoarchean lacustrine stromatolites[J],2022,50(8):907-911.
APA	Wilmeth, Dylan T..,Lalonde, Stefan, V.,Berelson, William M..,Petryshyn, Victoria.,Celestian, Aaron J..,...&Corsetti, Frank A..(2022).Evidence for benthic oxygen production in Neoarchean lacustrine stromatolites.GEOLOGY,50(8),907-911.
MLA	Wilmeth, Dylan T.,et al."Evidence for benthic oxygen production in Neoarchean lacustrine stromatolites".GEOLOGY 50.8(2022):907-911.