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    Miocene core complex development and coeval supradetachment basin evolution of Paros, Greece

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    Bargnesi_ku_0099M_11589_DATA_1.pdf (41.40Mb)
    Issue Date
    2011-05-23
    Author
    Bargnesi, Evan Anthony
    Publisher
    University of Kansas
    Format
    192 pages
    Type
    Thesis
    Degree Level
    M.S.
    Discipline
    Geology
    Rights
    This item is protected by copyright and unless otherwise specified the copyright of this thesis/dissertation is held by the author.
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    Abstract
    This study evaluates the tectonosedimentary evolution of Paros, Greece using apatite and zircon (U-Th)/He dating to assess the currently accepted kinematic history and resolve controversy about the formation of and sources to the Paros supradetachment basin. Overdispersed and improbable results in the footwall suite of zircons are examined using laser ablation depth-profiling to address the inherent assumption of homogeneous parent nuclide distribution in the zircon (U-Th)/He technique. Results from footwall zircon (U-Th)/He analyses indicate rapid cooling in excess of 100 degrees C/km from 11 - 7 Ma, which confirms rapid core complex exhumation along the Naxos-Paros low-angle extensional detachment. The suite of detrital zircons preserves the multi-stage Mesozoic-Cenozoic tectonometamorphic history of the central Aegean Sea and was deposited synchronously with progressive core complex development. Laser ablation data suggest that parent nuclide zonation in zircon poses a significant challenge to the reliability of (U-Th)/He dating which can be corrected by forward modeling unique alpha-ejection corrections.
    URI
    http://hdl.handle.net/1808/8045
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    • Geology Dissertations and Theses [232]
    • Theses [3827]

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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