Sökning: "igneous petrology"

Hittade 5 uppsatser innehållade orden igneous petrology.

  1. 1. Magmatic processes and storage beneath Heard Island, southern Indian Ocean

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Liu Chun Wei; [2023]
    Nyckelord :Heard Island; Clinopyroxene; Thermobarometry; Magma storage depth;

    Sammanfattning : A young marine island called Heard Island is located in the southern Kerguelen Plateau in the Indian Ocean, a large igneous province created by the Kerguelen mantle plume. The two major geographic regions on Heard Island have two principal volcano-magmatic suites. LÄS MER

  3. 2. Garnet amphibolite in the internal Eastern Segment, Sveconorwegian Province : monitors of metamorphic recrystallization at high temperature and pressure during Sveconorwegian orogeny

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Tove Hernnäs; [2018]
    Nyckelord :Sveconorwegian; metamorphic petrology; mapping; coronitic metagabbro; microtextures; Eastern Segment; Earth and Environmental Sciences;

    Sammanfattning : The analyzed area exposes a deep underthrusting lower plate of the Sveconorwegian orogen and facilitates studying of an elsewhere hidden portion of the Earth. Petrographic and structural studies of different metamorphic rock types within the southern Eastern Segment, Sveconorwegian Province, Sweden, were carried out to better understand the regional metamorphism and deformation history. LÄS MER

  4. 3. Temporal evolution of historic mafic lavas from Fogo, Cape Verde

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Erik Magnusson; [2016]
    Nyckelord :Cape Verde; Fogo; temporal evolution; igneous petrology; oxygen isotopes; Kap Verde; Fogo; tidsmässig utveckling; magmatisk petrologi; syreisotoper;

    Sammanfattning : The volcanic Island of Fogo that is situated near the end of the southern island chain in the archipelago of Cape Verde is one of the most active oceanic volcanoes in the world. The purpose of this study was to investigate temporal variations in lavas from Fogo by using whole rock major and trace elements and describe trends in magmatic differentiation, melting systematics and mantle source compositions. LÄS MER

  5. 4. Petrological study of the metamafic rocks across the Småland-Blekinge Deformation Zone

    Magister-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Andrius Rimša; [2002]
    Nyckelord :Småland-Blekinge Deformation Zone; petrology; geology; geography; metamafic rocks; Earth and Environmental Sciences;

    Sammanfattning : Den viktigaste tektoniska strukturen i Blekinge-Bornholm Provinsen (BBP), i sydost Blekinge, är den s.k. Småland-Blekinge Deformationszonen (SBDZ). Denna zon har en ungefärlig ost-västlig orientering och separerar Smålandsgranitoiderna, tillhörande TIB i norr från Tvingsgranitoider (graniter, granodioriter, tonaliter) i söder. LÄS MER

  7. 5. Retrograded eclogites of the Richarddalen Complex, NW Svalbard : petrology and P/T-conditions

    Magister-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Ros-Mari Hesbøl; [1996]
    Nyckelord :Svalbard; geography; geology; retrograded eclogites; Richarddalen Complex; petrology; P T-conditions; Earth and Environmental Sciences;

    Sammanfattning : At least three terranes have been identified in the Svalbard Caledonides, each one having independent structures and tectonothermal evolution. On Biskayerhalvöya in the Northwestern Terrane, eclogites, located within deformed igneous basement rocks, have been dated by the U-Pb zircon method to c. 625 Ma. LÄS MER