• Login
    View Item 
    •   Home
    • Student Scholarship
    • Honors Theses
    • View Item
    •   Home
    • Student Scholarship
    • Honors Theses
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of SSDRCommunitiesPublication DateAuthorsTitlesSubjectsThis CollectionPublication DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    New Constraints On Formation Of Orthogneiss In Southern Adirondacks Using Integrated Analysis Methods Of Petrology, Zircon U-Pb Geochronology And Whole Rock Geochemistry

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    McCaffery%20Kyle%20thesis.docx
    Size:
    13.82Mb
    Format:
    Microsoft Word 2007
    DownloadPDF Variant
    Title
    New Constraints On Formation Of Orthogneiss In Southern Adirondacks Using Integrated Analysis Methods Of Petrology, Zircon U-Pb Geochronology And Whole Rock Geochemistry
    Author
    McCaffery, Kyle
    Date
    May 2022
    Subject
    geochemistry
    geochronology
    petrology
    Adirondacks
    
    Metadata
    Show full item record
    URI
    http://hdl.handle.net/20.500.13013/2656
    Abstract
    The Adirondack Mountains (ADK) form the southern part of the Grenville Province, a poly-deformed orogenic complex formed in the Mesoproterozoic during the formation of Rodinia. The ADK is subdivided into two domains, separated by the Carthage-Colton Mylonite Zone. The Lowlands are characterized by upper amphibolite-facies metasedimentary rocks, including marbles, evaporites, and volcanic units, whereas the Highlands are formed by granulite-facies meta igneous rocks and anorthosite-mangerite-charnockite-granite magmatic complex. A large suite of granulite-facies orthogneisses exposed in the Southern Highlands yields the oldest (>1.3 Ga) ages, however, those ages come from a limited number of outcrops. We present new petrological, geochemical, and geochronological results from several quartzofeldspatic orthogneiss units to better document the timing and tectonic setting of these rocks. All samples are mainly composed of quartz, felspar, biotite, pyroxene, and opaque minerals. Foliation and lineation are defined by elongated quartz ribbons and feldspar grains, or biotite laminae. High-temperature microstructures, such as flame perthites in feldspars or checkerboard extinction in quartz are commonly observed in thin sections. Major element analyses show that samples have calc-alkaline affinities, suggesting an arc environment. U-Pb zircon geochronology produced two age groups. 1150 Ma ages which are Shawinigan and 1350 Ma ages which are associated with pre-orogenic magmatism. Based on whole rock geochemistry the Shawinigan age rocks are associated with within plate magmatism and the 1350 Ma pre-orogenic magmatism is associated with magmatic arc activity.
    Advisor
    Toraman, Erkan
    Department
    Geological Sciences
    Degree
    Bachelor of Science (BS)
    Collections
    Geological Sciences Honors Theses
    Honors Theses

    entitlement

     
    DSpace software (copyright © 2002 - 2023)  DuraSpace
    Quick Guide | Contact Us
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.