• Login
    View Item 
    •   Home
    • University of Alaska Fairbanks
    • UAF Graduate School
    • College of Natural Sciences and Mathematics
    • View Item
    •   Home
    • University of Alaska Fairbanks
    • UAF Graduate School
    • College of Natural Sciences and Mathematics
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of Scholarworks@UACommunitiesPublication DateAuthorsTitlesSubjectsTypeThis CollectionPublication DateAuthorsTitlesSubjectsType

    My Account

    Login

    First Time Submitters, Register Here

    Register

    Statistics

    Display statistics

    Igneous rocks and structures of the Nixon Fork Mine, Alaska, and their relations to ores

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    Perttu_uaf_0006N_10110.pdf
    Size:
    12.56Mb
    Format:
    PDF
    Download
    Thumbnail
    Name:
    CrossSectionNS.avi
    Size:
    13.54Mb
    Format:
    Unknown
    Download
    Thumbnail
    Name:
    GarPyxMafQtzMonzSection7013017 ...
    Size:
    33.99Mb
    Format:
    Unknown
    Download
    Thumbnail
    Name:
    GarPyxMafSpin.avi
    Size:
    124.2Mb
    Format:
    Unknown
    Download
    Thumbnail
    Name:
    GarPyxQtzMonzSection7013017N20M.avi
    Size:
    27.02Mb
    Format:
    Unknown
    Download
    Thumbnail
    Name:
    GarSknQtzMonzSection7013017N20M.avi
    Size:
    32.80Mb
    Format:
    Unknown
    Download
    Thumbnail
    Name:
    MaficDikeRotation.avi
    Size:
    41.89Mb
    Format:
    Unknown
    Download
    Thumbnail
    Name:
    MaficDikeSection7013017N20M.avi
    Size:
    27.52Mb
    Format:
    Unknown
    Download
    Thumbnail
    Name:
    MaficQtzMonzSection7013017N20M.avi
    Size:
    26.13Mb
    Format:
    Unknown
    Download
    Thumbnail
    Name:
    ModelSpin.avi
    Size:
    13.58Mb
    Format:
    Unknown
    Download
    Thumbnail
    Name:
    GarPyxMafSection7013017N20M.avi
    Size:
    22.77Mb
    Format:
    Unknown
    Download
    View more filesView fewer files
    Author
    Perttu, Brian
    Chair
    Newberry, Rainer
    Committee
    Wallace, Wesley
    Layer, Paul
    Metadata
    Show full item record
    URI
    http://hdl.handle.net/11122/4475
    Abstract
    The Nixon Fork Mine is a high-grade Cu-Au skarn deposit located near the western contact of the 5 square km Late Cretaceous Mystery pluton with marble, 7 km southeast of the Iditarod-Nixon Fork (I-NF) fault. This fault strikes at ~060�, and can be traced for ~400 km, with a minimum dextral displacement of ~90 km. Close proximity suggests that the Nixon Fork deposit should have been affected by the I-NF fault. In order to assess the structural evolution, I analyzed the orientations of geologic structures. I transcribed 1172 structures from previous mapping (to assess structures) and converted 186 maps into Vulcan CAD software (to create a three-dimensional model). I also acquired ������Ar/�_��_Ar dates for eleven representative potassium-bearing minerals and rocks. I identified six different episodes of deformation, including intrusion of felsic dikes, intrusion of mafic dikes, two episodes likely related to the I-NF fault, and two other poorly constrained episodes. ������Ar/�_��_Ar dates show the skarn is significantly younger than the Mystery Creek pluton, indicating it was likely sourced from an unexposed pluton. The main skarn pipe can be approximated as a line oriented ~210�/65�, which is approximately the intersection of planes defined by felsic dikes and major veins.
    Description
    Thesis (M.S.) University of Alaska Fairbanks, 2013
    Date
    2013-12
    Type
    Thesis
    Collections
    College of Natural Sciences and Mathematics
    Theses (Geosciences)

    entitlement

     
    ABOUT US|HELP|BROWSE|ADVANCED SEARCH

    The University of Alaska Fairbanks is an affirmative action/equal opportunity employer and educational institution and is a part of the University of Alaska system.

    ©UAF 2013 - 2022 | Questions? ua-scholarworks@alaska.edu | Last modified: September 25, 2019

    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.