Sökning: "petrologi"

Visar resultat 1 - 5 av 19 uppsatser innehållade ordet petrologi.

  1. 1. A Photogrammetric Workflow to Produce 3D-Models of Geological Samples

    Kandidat-uppsats, Uppsala universitet/Mineralogi, petrologi och tektonik

    Författare :Fanny Bjugger; [2023]
    Nyckelord :photogrammetry; S-f-M; digital 3D models; geoscience; rock samples; earth sciences;

    Sammanfattning : Photogrammetry and Structure-from-Motion (S-f-M) is a low-cost method of producing digital 3D models of rock samples that can be used for many different research and educational purposes. A 3D model of a delicate rock sample would enable the preservation of the sample and reduce the need of physical manipulation. LÄS MER

  3. 2. Baggalútar from Hvalfjörður (Iceland): Enigmatic spheroids of hydrothermally altered basaltic tephra

    Kandidat-uppsats, Uppsala universitet/Mineralogi, petrologi och tektonik

    Författare :Emmie Djuse; [2022]
    Nyckelord :Baggalútar; Iceland; basalt; Hvalfjörður; zeolites; volcanic spherulite; spheroids; Baggalútar; Island; basalt; Hvalfjörður; zeoliter; vulkaniska sfäruliter; sfäroider;

    Sammanfattning : Baggalútar are well-rounded spheroids that typically measures 16-18 mm in size and have a brownreddish appearance. They can be found in the Hvalfjörður bay in SW Iceland. LÄS MER

  4. 3. EBSD Investigation of High-Temperature Magnetite from Apatite-Iron-Oxide Deposits: Implications for the Formation of Giant Kiruna-Type Deposits

    Master-uppsats, Uppsala universitet/Mineralogi, petrologi och tektonik

    Författare :Jens Henriksson; [2022]
    Nyckelord :Kiruna-type deposit; electron backscattered diffraction; crystal settling; Fe-O systematics; crystal alignment;

    Sammanfattning : European iron production is to a large extent dependant on massive Kiruna type apatite-iron ore deposits. In this contribution, high-temperature magnetite samples from apatite-iron-oxide deposits are investigated by means of Electron Backscattered Diffraction. However, the origin of Kiruna-type deposits is still unresolved. LÄS MER

  5. 4. Correlation of Magma Intrusions in the Slaufrudalur Pluton With 3D Modeling and Photogrammetry

    Kandidat-uppsats, Uppsala universitet/Mineralogi, petrologi och tektonik

    Författare :Maximilian Solberg; [2022]
    Nyckelord :photogrammetry; pluton; intrusion; subterranean cauldron subsidence; point cloud; mesh; geocellular volume; fotogrammetri; pluton; intrusion; subterranean cauldron subsidence; point cloud; mesh; geocellular volume;

    Sammanfattning : Photogrammetry has become a great tool when analyzing geological outcrops. The Slaufrudalur plutonis located in southeast Iceland and is composed of multiple granitic intrusions. LÄS MER

  7. 5. Lejarfjället Garnet(?) Peridotite – Origin and Petrological Characterization of Symplectitic Aggregates in Ultramafic Rocks

    Kandidat-uppsats, Uppsala universitet/Mineralogi, petrologi och tektonik

    Författare :Felicia Eriksson; [2022]
    Nyckelord :ultramafic; high-pressure metamorphism; peridotite; garnet breakdown; Scandinavian Caledonides; ultramafisk; högtrycks metamorfos; peridotit; granat; skandinaviska kaledoniderna;

    Sammanfattning : Ultramafic rocks are abundant in the Earth’s mantle but rare on the surface. Since no in-situ samples from the mantle can be collected, mantle rocks provide knowledge of mechanisms operating in the mantle and large-scale processes that brought them up to the surface. LÄS MER