Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Proterozoic onset of crustal reworking and collisional tectonics: Reappraisal of the zircon oxygen isotope record

    Access Status
    Fulltext not available
    Authors
    Spencer, Christopher
    Cawood, P.
    Hawkesworth, C.J.
    Raub, T.d
    Prave, A.R.
    Roberts, N.M.
    Date
    2014
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Spencer, C. and Cawood, P. and Hawkesworth, C.J. and Raub, T.d and Prave, A.R. and Roberts, N.M. 2014. Proterozoic onset of crustal reworking and collisional tectonics: Reappraisal of the zircon oxygen isotope record. Geology. 42 (5): pp. 451-454.
    Source Title
    Geology
    DOI
    10.1130/G35363.1
    ISSN
    0091-7613
    URI
    http://hdl.handle.net/20.500.11937/23948
    Collection
    • Curtin Research Publications
    Abstract

    A global U-Pb and δ18O zircon database shows temporal changes in the magmatic record related to changes in the degree of crustal reworking. The δ18O composition of bulk sediment remains relatively constant through geologic time, with a mean value of 14.9‰. In contrast, the δ18O values in magmatic zircons vary from relatively low values averaging ~6‰ in the Archean to increasingly higher and scattered values defining a series of peaks and troughs in post-Archean data. The degree of crustal reworking increases at times of supercontinent assembly. Therefore we attribute the pattern of post-Archean δ18O values recorded by magmatic zircons to a significant increase in the incorporation of high δ18O sediment in response to enhanced crustal thickening and reworking associated with the onset of collisional tectonics, especially during formation of supercontinents.

    Related items

    Showing items related by title, author, creator and subject.

    • Detrital zircon U–Pb age and Hf isotope constrains on the generation and reworking of Precambrian continental crust in the Cathaysia Block, South China: A synthesis
      Li, X.; Li, Zheng-Xiang; Li, W. (2014)
      The South China Block, consisting of the Yangtze and the Cathaysia blocks, is one of the largest Precambrian blocks in eastern Asia. However, the early history of the Cathaysia Block is poorly understood due largely to ...
    • Precambrian evolution of the Chinese Central Tianshan Block: Constraints on its tectonic affinity to the Tarim Craton and responses to supercontinental cycles
      Huang, Z.; Long, X.; Wang, Xuan-Ce; Zhang, Y.; Du, L.; Yuan, C.; Xiao, W. (2017)
      © 2017 Elsevier B.V. As the southernmost continental fragment in the Central Asian Orogenic Belt (CAOB), the Chinese Central Tianshan Block (CTB) is essential for understanding the evolution of the CAOB. However, its ...
    • Zircon U–Pb–Lu–Hf–O isotopic evidence for =3.5 Ga crustal growth,reworking and differentiation in the northern Tarim Craton
      Ge, Rongfeng; Zhu, W.; Wilde, Simon; He, J. (2014)
      Continental crust was largely generated before 2.5 Ga through mafic–ultramafic and TTG (tonalite-trondhjemite-granodiorite) magmatism, but it is contentious when did such primitive crust evolve into mature granodioritic ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.