Origins of plate tectonics.
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| Title: | Origins of plate tectonics. |
|---|---|
| Authors: | P. G. |
| Source: | Proceedings of the National Academy of Sciences of the United States of America. 3/10/2026, Vol. 123 Issue 10, p1-1. 1p. |
| Subjects: | Plate tectonics, Hadean, Precambrian, Minerals |
| Geographic Terms: | Australia |
| Abstract: | The article focuses on research into the origins of Earth's plate tectonics by analyzing zircon crystals from Jack Hills, Australia, which date back over 4 billion years. The study found that the igneous cores of these zircons indicate a moderately oxidized mantle source during the Hadean Eon, suggesting early mantle convection. Metamorphic rims of the crystals reveal temperature and pressure conditions consistent with modern plate tectonics beginning by the Archean Eon, around 3.35 billion years ago. These findings imply that Earth's mantle reached near-modern oxidation states by approximately 4.15 billion years ago, supporting the emergence of collisional tectonics in the early Earth. [Extracted from the article] |
| Copyright of Proceedings of the National Academy of Sciences of the United States of America is the property of National Academy of Sciences and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 192507569 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Origins of plate tectonics. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22P%2E+G%2E%22">P. G.</searchLink> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Proceedings+of+the+National+Academy+of+Sciences+of+the+United+States+of+America%22">Proceedings of the National Academy of Sciences of the United States of America</searchLink>. 3/10/2026, Vol. 123 Issue 10, p1-1. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Plate+tectonics%22">Plate tectonics</searchLink><br /><searchLink fieldCode="DE" term="%22Hadean%22">Hadean</searchLink><br /><searchLink fieldCode="DE" term="%22Precambrian%22">Precambrian</searchLink><br /><searchLink fieldCode="DE" term="%22Minerals%22">Minerals</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Australia%22">Australia</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The article focuses on research into the origins of Earth's plate tectonics by analyzing zircon crystals from Jack Hills, Australia, which date back over 4 billion years. The study found that the igneous cores of these zircons indicate a moderately oxidized mantle source during the Hadean Eon, suggesting early mantle convection. Metamorphic rims of the crystals reveal temperature and pressure conditions consistent with modern plate tectonics beginning by the Archean Eon, around 3.35 billion years ago. These findings imply that Earth's mantle reached near-modern oxidation states by approximately 4.15 billion years ago, supporting the emergence of collisional tectonics in the early Earth. [Extracted from the article] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Proceedings of the National Academy of Sciences of the United States of America is the property of National Academy of Sciences and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1073/iti1026123 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: 1 Subjects: – SubjectFull: Plate tectonics Type: general – SubjectFull: Hadean Type: general – SubjectFull: Precambrian Type: general – SubjectFull: Minerals Type: general – SubjectFull: Australia Type: general Titles: – TitleFull: Origins of plate tectonics. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: P. G. IsPartOfRelationships: – BibEntity: Dates: – D: 10 M: 03 Text: 3/10/2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 00278424 Numbering: – Type: volume Value: 123 – Type: issue Value: 10 Titles: – TitleFull: Proceedings of the National Academy of Sciences of the United States of America Type: main |
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