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Article: Water‐Induced Mantle Overturns Leading to the Origins of Archean Continents and Subcontinental Lithospheric Mantle

TitleWater‐Induced Mantle Overturns Leading to the Origins of Archean Continents and Subcontinental Lithospheric Mantle
Authors
KeywordsArchean continents
density
early Earth
high pressure
Magama Ocean
silicate melt
Issue Date22-Nov-2023
PublisherWiley Open Access
Citation
Geophysical Research Letters, 2023, v. 50, n. 22 How to Cite?
Abstract

The origins of Archean continents and subcontinental lithospheric mantle (SCLM) were important events in the early Earth. The mechanisms for the origins of Archean continents and the SCLM remain unclear. This study suggests that these events were controlled by the evolution of the hydrous magma ocean (MO). With solidification, the basal MO eventually became gravitationally unstable because of the enrichment of water. The triggered massive mantle overturns resulted in the major pulses of the crust and thick SCLM generations. The model avoids a fatal drawback of the oceanic plateau model for the origin of continents: the source of HO needed for the formation of tonalite-trondhjemite-granodiorite (TTG). The model can also account for why the TTG and thick SCLM basically occurred in the Archean.


Persistent Identifierhttp://hdl.handle.net/10722/340669
ISSN
2023 Impact Factor: 4.6
2023 SCImago Journal Rankings: 1.850
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWu, Zhongqing-
dc.contributor.authorSong, Jian-
dc.contributor.authorZhao, Guochun-
dc.contributor.authorPan, Zhongxu -
dc.date.accessioned2024-03-11T10:46:17Z-
dc.date.available2024-03-11T10:46:17Z-
dc.date.issued2023-11-22-
dc.identifier.citationGeophysical Research Letters, 2023, v. 50, n. 22-
dc.identifier.issn0094-8276-
dc.identifier.urihttp://hdl.handle.net/10722/340669-
dc.description.abstract<p>The origins of Archean continents and subcontinental lithospheric mantle (SCLM) were important events in the early Earth. The mechanisms for the origins of Archean continents and the SCLM remain unclear. This study suggests that these events were controlled by the evolution of the hydrous magma ocean (MO). With solidification, the basal MO eventually became gravitationally unstable because of the enrichment of water. The triggered massive mantle overturns resulted in the major pulses of the crust and thick SCLM generations. The model avoids a fatal drawback of the oceanic plateau model for the origin of continents: the source of H<inf/>O needed for the formation of tonalite-trondhjemite-granodiorite (TTG). The model can also account for why the TTG and thick SCLM basically occurred in the Archean.</p>-
dc.languageeng-
dc.publisherWiley Open Access-
dc.relation.ispartofGeophysical Research Letters-
dc.subjectArchean continents-
dc.subjectdensity-
dc.subjectearly Earth-
dc.subjecthigh pressure-
dc.subjectMagama Ocean-
dc.subjectsilicate melt-
dc.titleWater‐Induced Mantle Overturns Leading to the Origins of Archean Continents and Subcontinental Lithospheric Mantle-
dc.typeArticle-
dc.identifier.doi10.1029/2023GL105178-
dc.identifier.scopuseid_2-s2.0-85177697396-
dc.identifier.volume50-
dc.identifier.issue22-
dc.identifier.eissn1944-8007-
dc.identifier.isiWOS:001124349900004-
dc.identifier.issnl0094-8276-

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