Essays about: "explosive eruption"

Showing result 1 - 5 of 6 essays containing the words explosive eruption.

  1. 1. Petrography and Mineral Chemistry of the Sälskär Breccia (Alnö Alkaline Complex, Central Sweden)

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Vincent Gustafsson; [2022]
    Keywords : Alnö alkaline complex; diatreme; melilitite; pelletal lapilli; volcanic breccia; Alnö alkalina område; diatrem; melilitit; pelletal lapilli; vulkanisk breccia;

    Abstract : Primitive magmas can provide important details about the mantle from which they are derived. In this thesis, petrographic observations and new mineral chemistry analyses of the Sälskär breccia from the Alnö alkaline complex, central Sweden, are reported. READ MORE

  3. 2. Internal geology and emplacement processes of Kimberlites, Case Study from the Tsabong Kimberlite Field, Botswana

    University essay from Luleå tekniska universitet/Geovetenskap och miljöteknik

    Author : Mpho Ndebele; [2020]
    Keywords : Kimberlites; Geology; Emplacement Processes; Botswana;

    Abstract : The Crateceous (85 Ma) MK1 pipe is part of the Tsabong kimberlite cluster located approximately550km south west of Gaborone and geologically found within the Kapvaal Craton. The Tsabongkimberlite field consists of 86 known kimberlites. The MK1 pipe is the largest of this cluster at 140ha,1. READ MORE

  4. 3. 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

  5. 4. Relationship Between Hekla’s Magmatic System and Its Eruptive Behavior

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Eric Andin; [2017]
    Keywords : Hekla; crystal mush; thermobarometry; magma storage depth; Hekla; kristallansamling; termobarometri; magmalagringsdjup;

    Abstract : The southern part of Iceland incorporates two parallel volcanic zones, the Eastern Volcanic Zone and the Western Volcanic Zone. These two branches are connected by an E-W transform. Hekla is located close to intersection between the two plate boundaries. Hekla is one of Iceland's most active and explosive volcanoes. READ MORE

  6. 5. Constraining Crustal Volatile Release in Magmatic Conduits by Synchrotron X-ray μ-CT

    University essay from Berggrundsgeologi

    Author : Sylvia Berg; [2011]
    Keywords : xenoliths; crustal gases; synchrotron X-ray μ-CT; 3D-bubble networks; gas migration; magmatic volatile budget; explosive eruption;

    Abstract : Magma-crust interaction in magma reservoirs and conduits is a crucial process during magma evolution and ascent. This interaction is recorded by crustal xenoliths that frequently show partial melting, inflation and disintegration textures. READ MORE