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    Field occurrence of high-grade metamorphic rocks at telen in the lutzow-holm complex, East Antarctica

    Access Status
    Fulltext not available
    Authors
    Koizumi, T.
    Tsunogae, T.
    Dunkley, Daniel
    Miyamoto, T.
    Kato, M.
    Date
    2014
    Type
    Journal Article
    
    Metadata
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    Citation
    Koizumi, T. and Tsunogae, T. and Dunkley, D. and Miyamoto, T. and Kato, M. 2014. Field occurrence of high-grade metamorphic rocks at telen in the lutzow-holm complex, East Antarctica. Earth Evolution Sciences. 8: pp. 3-12.
    Source Title
    Earth Evolution Sciences
    ISSN
    1881-8463
    Faculty
    Faculty of Science and Engineering
    URI
    http://hdl.handle.net/20.500.11937/50944
    Collection
    • Curtin Research Publications
    Abstract

    © 2014, University of Tsukuba. All Rights Reserved.We report field occurrence and brief petrographical characters of high-grade metamorphic rocks from Tel en in the granulite-facies zone of the Lützow-Holm Complex, East Antarctica, and correlate the dominant lithologies with those in adjacent exposures. The major rock types in Telen are felsic to intermediate orthogneiss, mafic granulite/amphibolite, calc-silicate rocks, felsic garnet gneiss, and pelitic granulite, which are similar to adjacent localities such as Skallen and Skallevikshalsen, although felsic to mafic orthogneisses are dominant in Telen, while calc-silicate rocks and marbles are more abundant in Skallen and Skallevikshalsen. They have monotonous N-S trending foliation dipping gently (about 20-30°) toward the east. Younger granitoids intrude nearly parallel or perpendicular to the metamorphic rocks. Peak metamorphic conditions have been estimated for a garnet-rich mafic granulite as 860-880°C and 10.1-10.5 kbar, which is consistent with the results of adjacent localities. Our study confirmed that Telen-Skallen-Skallevikshalsen region in the central domain of the granulite-facies zone corresponds to a single mass of high-grade metamorphic rocks, which was formed by Late Neoproterozoic to Cambrian high-grade metamorphism possibly related to the final phase of continent-continent collision during the assembly of Gondwana Supercontinent.

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