Sökning: "Migmatite"

Visar resultat 1 - 5 av 9 uppsatser innehållade ordet Migmatite.

  1. 1. Comparison of Magnetic-Susceptibility Models From UAV-borne and Ground Measurements in Enåsen Area, Sweden

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Clara Sjödin; [2022]
    Nyckelord :magnetic susceptibility; Enåsen area; UAV survey; magnetic anomalies; Potent; magnetisk susceptibilitet; Enåsen; drönare; magnetiska anomalier; Potent;

    Sammanfattning : Mapping anomalies in the Earth’s magnetic field is one method used in applied geophysics, for exploring buried structures and objects. Magnetic surveys can be ground-based or made airborne, onboard airplanes, helicopters, or unmanned aerial vehicles (UAV), also known as drones. LÄS MER

  3. 2. Zircon U-Pb constraints on the timing of Sveconorwegian migmatite formation in the Western and Median Segments of the Idefjorden terrane, SW Sweden

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Mimmi Ingered; [2019]
    Nyckelord :Sveconorwegian orogen; U-Pb; Zircon; Migmatite; Idefjorden terrane; Earth and Environmental Sciences;

    Sammanfattning : The Western and Median Segments of the Idefjorden terrane have been metamorphosed and migmatized during the Sveconorwegian orogeny (ca. 1 Ga), but the timing of these events between the two segments remains unclear. LÄS MER

  4. 3. U-Pb datering av zirkon från migmatitisk gnejs i Delsjöområdet, Idefjordenterrängen

    Kandidat-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Mimmi Ingered; [2017]
    Nyckelord :Svekonorvegiska orogenesen; Idefjordenterrängen; U-Pb; Migmatit; Zirkon; LA-ICP-MS; Earth and Environmental Sciences;

    Sammanfattning : Under den Svekonorvegiska orogenesen omkristalliserade stora delar av sydvästra Sverige och bildade metamorfa migmatitiska gnejser. I Idefjordenterrängen, väster om Mylonitzonen, har migmatiterna inte daterats och då kunskapen om de metamorfa processerna i området brister kan migmatiterna ge en bättre bild av när metamorfosen skedde. LÄS MER

  5. 4. Metamorphic record of monazite in aluminous migmatitic gneisses at Stensjöstrand, Sveconorwegian orogen

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Andreas Olsson; [2016]
    Nyckelord :Monazite; LA-ICP-MS; U-Th-Pb Geochronology; Migmatite; Stensjöstrand; Earth and Environmental Sciences;

    Sammanfattning : Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) has been utilised to investigate the age and chemical composition of two texturally different types of monazite in leucosome and mesosome of polymetamorphic aluminous migmatitic gneisses at Stensjöstrand, Halland. Results of radiometric dating are compared with previously published zircon dates. LÄS MER

  7. 5. Small-Scale Shear Zones and Deformation in Migmatite on Mt. Åreskutan

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Johanna Gottlander; [2015]
    Nyckelord :Shear zone; migmatite; Åreskutan; deformation; garnet;

    Sammanfattning : The Åreskutan nappe complex consists of the partly molten rock migmatite, which originates from the subduction formed by the collision of continents Baltica and Laurentia. It is a so-called hot nappe, which has been deeply buried in the subduction zone, based on findings of high-pressure minerals in the migmatitic gneiss. LÄS MER