KUKU

KU ScholarWorks

  • myKU
  • Email
  • Enroll & Pay
  • KU Directory
    • Login
    View Item 
    •   KU ScholarWorks
    • Dissertations and Theses
    • Dissertations
    • View Item
    •   KU ScholarWorks
    • Dissertations and Theses
    • Dissertations
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Triassic Yangtze Platform margin: Evolution, internal architecture, and death of a large, attached carbonate platform, Guizhou Province, China

    Thumbnail
    View/Open
    Minzoni_Marcello_2007_6599373.pdf (135.5Mb)
    Issue Date
    2007-05-31
    Author
    Minzoni, Marcello
    Publisher
    University of Kansas
    Type
    Dissertation
    Degree Level
    Ph.D.
    Discipline
    Geology
    Rights
    This item is protected by copyright and unless otherwise specified the copyright of this thesis/dissertation is held by the author.
    Metadata
    Show full item record
    Abstract
    The stratigraphy and geometry of the Triassic Yangtze Platform margin in south China demonstrate the fundamental role of differential tectonic subsidence and timing of basinal siliciclastic influx in the development and termination of a vast, attached carbonate platform.

    The Yangtze Platform developed as a carbonate ramp following drowning in latest Permian, but evolved into a low-relief platform during the Olenekian (late Early Triassic). During early Middle Triassic (Anisian) the platform developed a progressively steeper profile with cyclic peritidal carbonates and an interior lagoon forming in the lee of Tubiphytes reefs. In the Ladinian (late Middle Triassic) platform-margin cyclic peritidal sand flats extended into the interior, defining a flat-topped morphology. The southwestern sector of the platform drowned at the beginning of Late Triassic (Carnian); deep-water lime mudstone and black shale resting unconformably on faulted peritidal deposits signal tectonic control. The platform-to-basin transition records repeated aggradation, fault-controlled backstepping, and progradation prior to final drowning. Shallow-water carbonate deposition continued to the northeast until burial by shallow-water siliciclastics later in the Carnian.

    Stratal geometries of three platform-to-basin transects reveal significant along-strike variability in the platform. The southwestern sector aggraded and stepped back during Middle Triassic and drowned at the beginning of Carnian. The northeastern sector retreated in the Anisian, prograded markedly in Ladinian and early Carnian, before burial by siliciclastics. Comparisons indicate that tectonic subsidence, local faulting, and rate of basinal deposition controlled the evolution and architecture of the platform margin and slope.

    Evolution and time of drowning of four isolated platforms in the south-adjacent Nanpanjiang Basin indicate that rapid subsidence and basin fill started earlier in the south and progressed northward. This pattern suggests a foreland setting with collision along the southern perimeter of the basin.

    Evolution and large-scale architecture of the Yangtze Platform presents an analog for lateral variability in seismic-scale characteristics of carbonate platforms. Given subsidence history and source of siliciclastic input, basin-wide, seismic-scale evolution and termination of carbonate accumulations may be predictable.
    Description
    Dissertation (Ph.D.)--University of Kansas, Geology, 2007.
    URI
    http://hdl.handle.net/1808/32065
    Collections
    • Dissertations [4475]

    Items in KU ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.


    We want to hear from you! Please share your stories about how Open Access to this item benefits YOU.


    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
     

     

    Browse

    All of KU ScholarWorksCommunities & CollectionsThis Collection

    My Account

    LoginRegister

    Statistics

    View Usage Statistics

    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
     

     

    The University of Kansas
      Contact KU ScholarWorks
    Lawrence, KS | Maps
     
    • Academics
    • Admission
    • Alumni
    • Athletics
    • Campuses
    • Giving
    • Jobs

    The University of Kansas prohibits discrimination on the basis of race, color, ethnicity, religion, sex, national origin, age, ancestry, disability, status as a veteran, sexual orientation, marital status, parental status, gender identity, gender expression and genetic information in the University’s programs and activities. The following person has been designated to handle inquiries regarding the non-discrimination policies: Director of the Office of Institutional Opportunity and Access, IOA@ku.edu, 1246 W. Campus Road, Room 153A, Lawrence, KS, 66045, (785)864-6414, 711 TTY.

     Contact KU
    Lawrence, KS | Maps