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A plate tectonic view from the top of the world.

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Title: A plate tectonic view from the top of the world.
Authors: Larson, Kyle P.1 (AUTHOR) kyle.larson@ubc.ca, Cottle, John M.2 (AUTHOR), Kylander‐Clark, Andrew2 (AUTHOR), Lageson, David3 (AUTHOR)
Source: Terra Nova. Jun2022, Vol. 34 Issue 3, p224-230. 7p.
Subjects: Plate tectonics, Calcite analysis, Eclogite, Rock deformation, Orogeny
Geographic Terms: Mount Everest (China & Nepal), Oceania, Himalaya Mountains
Abstract: New U–Pb calcite geochronological analysis of shear veins in specimens collected from the summit pyramid of Mount Everest demonstrate that upper crustal deformation recorded in those rocks is Himalayan in age and was ongoing at 45.0 ± 5.4 Ma. This deformation precedes movement along the adjacent Qomolangma detachment by ~30 Myrs and coincides with metamorphism in nearby, structurally deeper, sillimanite‐migmatite gneisses and eclogite. The coeval record of deformation and metamorphism across all crustal levels further coincides with detachment of the Indian oceanic lithospheric slab, the inferred "main" collision and final closure of the Tethys ocean in multi‐collisional models of the Himalaya, and Eocene reorganization of tectonic plates in the South Pacific. This new dataset confirms that the summit rocks from Mount Everest preserve not only a complex, multi‐deformational record of Himalayan orogenesis, but also large‐scale changes in plate tectonics. [ABSTRACT FROM AUTHOR]
Copyright of Terra Nova is the property of Wiley-Blackwell 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
Header DbId: egs
DbLabel: Engineering Source
An: 156784789
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
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  Data: A plate tectonic view from the top of the world.
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  Data: <searchLink fieldCode="AR" term="%22Larson%2C+Kyle+P%2E%22">Larson, Kyle P.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> kyle.larson@ubc.ca</i><br /><searchLink fieldCode="AR" term="%22Cottle%2C+John+M%2E%22">Cottle, John M.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kylander‐Clark%2C+Andrew%22">Kylander‐Clark, Andrew</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lageson%2C+David%22">Lageson, David</searchLink><relatesTo>3</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Terra+Nova%22">Terra Nova</searchLink>. Jun2022, Vol. 34 Issue 3, p224-230. 7p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Plate+tectonics%22">Plate tectonics</searchLink><br /><searchLink fieldCode="DE" term="%22Calcite+analysis%22">Calcite analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Eclogite%22">Eclogite</searchLink><br /><searchLink fieldCode="DE" term="%22Rock+deformation%22">Rock deformation</searchLink><br /><searchLink fieldCode="DE" term="%22Orogeny%22">Orogeny</searchLink>
– Name: SubjectGeographic
  Label: Geographic Terms
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  Data: <searchLink fieldCode="DE" term="%22Mount+Everest+%28China+%26+Nepal%29%22">Mount Everest (China & Nepal)</searchLink><br /><searchLink fieldCode="DE" term="%22Oceania%22">Oceania</searchLink><br /><searchLink fieldCode="DE" term="%22Himalaya+Mountains%22">Himalaya Mountains</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: New U–Pb calcite geochronological analysis of shear veins in specimens collected from the summit pyramid of Mount Everest demonstrate that upper crustal deformation recorded in those rocks is Himalayan in age and was ongoing at 45.0 ± 5.4 Ma. This deformation precedes movement along the adjacent Qomolangma detachment by ~30 Myrs and coincides with metamorphism in nearby, structurally deeper, sillimanite‐migmatite gneisses and eclogite. The coeval record of deformation and metamorphism across all crustal levels further coincides with detachment of the Indian oceanic lithospheric slab, the inferred "main" collision and final closure of the Tethys ocean in multi‐collisional models of the Himalaya, and Eocene reorganization of tectonic plates in the South Pacific. This new dataset confirms that the summit rocks from Mount Everest preserve not only a complex, multi‐deformational record of Himalayan orogenesis, but also large‐scale changes in plate tectonics. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Terra Nova is the property of Wiley-Blackwell 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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      – Type: doi
        Value: 10.1111/ter.12582
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 7
        StartPage: 224
    Subjects:
      – SubjectFull: Plate tectonics
        Type: general
      – SubjectFull: Calcite analysis
        Type: general
      – SubjectFull: Eclogite
        Type: general
      – SubjectFull: Rock deformation
        Type: general
      – SubjectFull: Orogeny
        Type: general
      – SubjectFull: Mount Everest (China & Nepal)
        Type: general
      – SubjectFull: Oceania
        Type: general
      – SubjectFull: Himalaya Mountains
        Type: general
    Titles:
      – TitleFull: A plate tectonic view from the top of the world.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Larson, Kyle P.
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            NameFull: Cottle, John M.
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            NameFull: Kylander‐Clark, Andrew
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            NameFull: Lageson, David
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            – D: 01
              M: 06
              Text: Jun2022
              Type: published
              Y: 2022
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              Value: 34
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