Essays about: "magmatisk petrologi"

Found 3 essays containing the words magmatisk petrologi.

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

    University essay from Uppsala universitet/Mineralogi, petrologi och tektonik

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

    Abstract : 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. READ MORE

  3. 2. The Crystal Size Distribution of Cerro Bayo

    University essay from Uppsala universitet/Mineralogi, petrologi och tektonik

    Author : Elin Kuylenstierna; [2018]
    Keywords : Crystal Size Distribution CSD ; magma chamber; igneous rock texture; Kristallstorleksfördelning CSD ; magmakammare; magmatisk bergartstruktur;

    Abstract : To understand the complex structure of magmatic plumbing systems beneath volcanoes, one needs to study the different textures shown in the igneous rocks produced by the volcano in question. By doing this, one can get a clue of the processes that resulted in the final rock. READ MORE

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

    University essay from Uppsala universitet/Institutionen för geovetenskaper

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

    Abstract : 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. READ MORE