气候变化领域集成服务门户(CCPortal): Heterogeneous Hadean crust with ambient mantle affinity recorded in detrital zircons of the Green Sandstone Bed, South Africa

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DOI	10.1073/pnas.2004370118
	Heterogeneous Hadean crust with ambient mantle affinity recorded in detrital zircons of the Green Sandstone Bed, South Africa
	Drabon N.; Byerly B.L.; Byerly G.R.; Wooden J.L.; Brenhin Keller C.; Lowe D.R.
发表日期	2021
ISSN	00278424
卷号	118 期号:8
英文摘要	The nature of Earth’s earliest crust and the processes by which it formed remain major issues in Precambrian geology. Due to the absence of a rock record older than ∼4.02 Ga, the only direct record of the Hadean is from rare detrital zircon and that largely from a single area: the Jack Hills and Mount Narryer region of Western Australia. Here, we report on the geochemistry of Hadean detrital zircons as old as 4.15 Ga from the newly discovered Green Sandstone Bed in the Barberton greenstone belt, South Africa. We demonstrate that the U-Nb-Sc-Yb systematics of the majority of these Hadean zircons show a mantle affinity as seen in zircon from modern plume-type mantle environments and do not resemble zircon from modern continental or oceanic arcs. The zircon trace element compositions furthermore suggest magma compositions ranging from higher temperature, primitive to lower temperature, and more evolved tonalite-trondhjemite-granodiorite (TTG)-like magmas that experienced some reworking of hydrated crust. We propose that the Hadean parental magmas of the Green Sandstone Bed zircons formed from remelting of mafic, mantle-derived crust that experienced some hydrous input during melting but not from the processes seen in modern arc magmatism. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Crustal evolution; Early Earth; Hadean; Zircon
语种	英语
scopus关键词	detrital zircon; trace element; unclassified drug; zirconium; ambient mantle affinity; Article; chemical composition; continental arc; controlled study; crystallization; depletion; earth crust; environmental parameters; evolution; geochemistry; geographic and geological phenomena; geology; granodiorite magma; green sandstone bed; Hadean; high temperature; low temperature; magma; oceanic arc; plume; Precambrian; principal component analysis; priority journal; rock; South Africa; tonalite magma; trondhjemite magma
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/180524
作者单位	Department of Geological Sciences, Stanford University, Stanford, CA 94305, United States; Department of Earth Sciences, University of California, Santa Barbara, CA 93106, United States; Department of Geology and Geophysics, Louisiana State University, Baton Rouge, LA 70803, United States; Marietta, GA 30064, United States; Department of Earth Sciences, Dartmouth College, Hanover, NH 03755, United States; Enterprise Services, Thermo Fisher Scientific, Waltham, MA 02451, United States
推荐引用方式 GB/T 7714	Drabon N.,Byerly B.L.,Byerly G.R.,et al. Heterogeneous Hadean crust with ambient mantle affinity recorded in detrital zircons of the Green Sandstone Bed, South Africa[J],2021,118(8).
APA	Drabon N.,Byerly B.L.,Byerly G.R.,Wooden J.L.,Brenhin Keller C.,&Lowe D.R..(2021).Heterogeneous Hadean crust with ambient mantle affinity recorded in detrital zircons of the Green Sandstone Bed, South Africa.Proceedings of the National Academy of Sciences of the United States of America,118(8).
MLA	Drabon N.,et al."Heterogeneous Hadean crust with ambient mantle affinity recorded in detrital zircons of the Green Sandstone Bed, South Africa".Proceedings of the National Academy of Sciences of the United States of America 118.8(2021).