Essays about: "magma plumbing"

Showing result 1 - 5 of 11 essays containing the words magma plumbing.

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

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Liu Chun Wei; [2023]
    Keywords : Heard Island; Clinopyroxene; Thermobarometry; Magma storage depth;

    Abstract : 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. READ MORE

  3. 2. Origin of Silicic Magmatism at the Katla Volcano, South Iceland

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Caroline Svanholm; [2021]
    Keywords : Katla volcano; Iceland; high-silica rocks; oxygen isotopes; AFC processes; Vulkanen Katla; Island; kiselrika bergarter; syreisotoper; AFC-processer;

    Abstract : Katla volcano, South Iceland, is a bimodal volcanic system hosting an unusual high number of silicic rocks within a basaltic rift setting. The petrogenesis of silica-rich rocks at Katla is controversial and two end-member hypotheses have been suggested. READ MORE

  4. 3. Major and trace element geochemical analysis of norites in the Hakefjorden Complex to constrain magma source and magma plumbing systems

    University essay from Lunds universitet/Geologiska institutionen

    Author : Aodhan Barrett; [2020]
    Keywords : Anorthosite; norite; Plagioclase; Hakefjorden Complex; Sweden; Trace Elements; Geochemistry; Magma Origin; Earth and Environmental Sciences;

    Abstract : Major and trace element data taken from plagioclase crystals from anorthosites and related rock units in the Hakefjorden Complex located off the west coast of Sweden were investigated for the purposes of constraining magma chamber processes and the source of the magma. Although the anorthosite units were completely homogenous in regards to its chemistry, the plagioclase in the associated norite and ilmenite-leuconorite units showed substantial variation. READ MORE

  5. 4. 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

  6. 5. Geothermal Potential of Sub-Volcanic Intrusions in a Typical Caldera Setting

    University essay from Uppsala universitet/Mineralogi, petrologi och tektonik

    Author : Einar Bessi Gestsson; [2018]
    Keywords : sub-volcanic intrusions; thermometry; numerical modeling; geothermal energy; magmaintrusioner; termometri; numerisk modell; geotermisk energi;

    Abstract : Sub-volcanic intrusions can form an extensive network of sills, dikes and other intrusion types that make up a plumbing system beneath volcanoes. Such intrusions are the heat source for high-temperature geothermal systems in volcanic areas and therefore, it is of great importance to study them in relation to geothermal exploration and production. READ MORE