Essays about: "magma"

Showing result 21 - 25 of 66 essays containing the word magma.

  1. 21. Implications of Magma and Bedrock Interaction, a Study of Xenopumice from La Palma, the Canary Islands

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Beatrice Jägerup; [2019]
    Keywords : La Palma; xenopumice; phreatomagmatism; whole rock geochemistry; oxygen isotopes; La Palma; felsiska xenoliter; explosiv vulkanism; geokemi; syreisotoper;

    Abstract : This thesis focuses on frothy, felsic xenoliths called ‘xenopumice’, that were retrieved from La Palma during a 10–day field campaign in December 2018. There are only few descriptions of these frothty xenoliths, and a consensus on their origin has not yet been achieved. READ MORE

  3. 22. Design optimization for obtaining zero defects in steel casting

    University essay from Högskolan i Jönköping/JTH, Material och tillverkning

    Author : Pranit Pramod Purkar; [2019]
    Keywords : Casting; Defects; Gating System; Molten Metal; Mould; Simulation;

    Abstract : This thesis is about the design of the gating system and selection of proper alloy for defects free (grate bar) casting. The gating system plays an important role in casting manufacturing process. The gating system has different elements like pouring cup, sprue, well, runner, riser, and ingates. READ MORE

  4. 23. 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

  5. 24. Magmatic water content and its effect on volcano explosivity; an FTIR investigation on the 2006 and 2010 eruption products of Merapi volcano, Indonesia

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Nadhirah Seraphine; [2018]
    Keywords : Merapi volcano; NAMs; clinopyroxene; magmatic water content; FTIR spectroscopy;

    Abstract : One of the most important volatiles in magma is water. In magma, water is incorporated in both the melt and in crystals, including hydrous and nominally anhydrous minerals (NAMs). READ MORE

  6. 25. 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