Oxidation of Archean upper mantle caused by crustal recycling

The redox evolution of Archean upper mantle impacted mantle melting and the nature of chemical equilibrium between mantle, ocean and atmosphere of the early Earth. Yet, the origin of these variations in redox remain controversial. Here we show that a global compilation of ∼3.8-2.5 Ga basalts can be...

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Bibliographic Details
Published in:Nature communications 2022-06, Vol.13 (1), p.3283-3283, Article 3283
Main Authors: Gao, Lei, Liu, Shuwen, Cawood, Peter A., Hu, Fangyang, Wang, Jintuan, Sun, Guozheng, Hu, Yalu
Format: Article
Language:English
Subjects:
704/2151/209
704/2151/213/4114
Basalt
Cratons
Earth mantle
Evolution
Fugacity
Humanities and Social Sciences
Island arcs
Isotope ratios
Isotopes
Lava
multidisciplinary
Niobium
Oxidation
Primitive Earth atmosphere
Recycling
Science
Science (multidisciplinary)
Titanium
Upper mantle
Vanadium
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Summary:The redox evolution of Archean upper mantle impacted mantle melting and the nature of chemical equilibrium between mantle, ocean and atmosphere of the early Earth. Yet, the origin of these variations in redox remain controversial. Here we show that a global compilation of ∼3.8-2.5 Ga basalts can be subdivided into group B-1, showing modern mid-ocean ridge basalt-like features ((Nb/La) PM  ≥ 0.75), and B-2, which are similar to contemporary island arc-related basalts ((Nb/La) PM  
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-022-30886-4