Sökning: "Sveconorwegian orogeny"

Visar resultat 1 - 5 av 20 uppsatser innehållade orden Sveconorwegian orogeny.

  1. 1. APPLICATION OF IN SITU Rb-Sr DATING AND GEOCHEMICAL INVESTIGATIONS ON A NEW, 1.52-1.56 GA. OLD PEGMATITE FIELD IN THE ARCHIPELAGO OFF GOTHENBURG, IDEFJORDEN TERRANE, WESTERN SWEDEN

    Master-uppsats, Göteborgs universitet/Institutionen för geovetenskaper

    Författare :Laszlo Zorc; [2023-08-18]
    Nyckelord :;

    Sammanfattning : In this study, Rb-Sr geochronology was used to determine the crystallization/cooling ages of muscovites and biotites from mapped primitive barren and rare element pegmatites in the Stora-Le-Marstrand Formation in the southwestern archipelago of Gothenburg. The results indicate that primitive barrens can be linked to the DG2 deformation event that occurred 1. LÄS MER

  3. 2. Structural investigation of ductile deformations across the Frontal Wedge south of Lake Vättern, southern Sweden

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Ellinor Halvarsson; [2022]
    Nyckelord :Frontal wedge; deformation zone; Sveconorwegian orogeny; Sveconorwegian Orogen; Eastern Segment; shear-sense indicators; Protogine zone; structural geology; bedrock geology; Earth and Environmental Sciences;

    Sammanfattning : Deformationszonen kallad ”Frontal wedge” är ett system av N-S branta och vertikala deformationszoner i gränsen mellan Svekonorvegiska och Sekorareliska provincen, i södra Sverige. Ursprung av dessa strukturer är inte fullt förstått och under de senaste årtiondena har endast ett fåtal undersökningar gjorts på dessa deformationszoner. LÄS MER

  4. 3. Geological characterisation of geophysical lineaments as part of the expanded site descriptive model around the planned repository site for high-level nuclear waste, Forsmark, Sweden

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Aron Bakker; [2021]
    Nyckelord :Forsmark; deformation zones; Svecokarelian; Sveconorwegian; ductile-brittle transition; brittle deformation; mylonite; Earth and Environmental Sciences;

    Sammanfattning : The Swedish Nuclear Fuel and Waste Management Co. (SKB) started a project in 2020 near Forsmark, Sweden with the aim to expand the deformation zone model to encompass the entire catchment area around the planned repository for spent nuclear fuel. LÄS MER

  5. 4. Geochronology of gneisses adjacent to the Mylonite Zone in southwestern Sweden: evidence of a tectonic window?

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :James Davies; [2020]
    Nyckelord :Geochronology; Hallandian orogeny; Mylonite Zone; Sveconorwegian orogeny; U-Pb; Idefjorden terrane; Eastern Segment; B-Bulan; Brobacka; Earth and Environmental Sciences;

    Sammanfattning : The relationship between the Eastern Segment and Idefjorden terrane prior to the Sveconorwegian orogeny has long been debated. Evidence of a common history is minimal and localised; at the same time, the notion that the Sveconorwegian orogeny formed as a result of a collisional event is also disputed. LÄS MER

  7. 5. Metamorphic paragenesis and P-T conditions in garnet amphibolite from the Median Segment of the Idefjorden Terrane, Lilla Edet

    Kandidat-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Anna Sartell; [2019]
    Nyckelord :P-T conditions; Sveconorwegian orogeny; Idefjorden Terrane; Median Segment; Göta Älv Shear Zone; garnet amphibolite; upper amphibolite facies; partial melting; Earth and Environmental Sciences;

    Sammanfattning : The Sveconorwegian orogeny (c. 1 Ga) lead to the recrystallization of large parts of southwestern Sweden, with widespread metamorphism as well as local migmatization. LÄS MER