Search for dissertations about: "magma flow"

Showing result 1 - 5 of 12 swedish dissertations containing the words magma flow.

  2. 1. The dynamic emplacement of felsic magma in the upper crust

    Author : Tobias Mattsson; Steffi Burchardt; Karen Mair; Christoph Breitkreuz; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; laccolith; cryptodome; magma emplacement; magma flow; magma rheology; granite; rhyolite; pluton; AMS; XCT; thermobarometry; Geovetenskap med inriktning mot mineralogi; petrologi och tektonik; Earth Science with specialization in Mineral Chemistry; Petrology and Tectonics;

    Abstract : Felsic magma intrudes earth’s upper crust through a variety of mechanisms. Magma intrusion growth and shape have mainly been explained in terms of host rock properties and intrusion depth, while considering the magma as an overpressurised fluid. READ MORE

  4. 2. Deformation and fluid-flow in magma-poor margins : A study of the Tasna Ocean-Continent transition, SE Switzerland

    Author : Anna Engström; Alasdair Skelton; Hemin Koyi; Gianreto Manatschal; Wolfgang Bach; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Magma-poor margins; Deformation; Fluid-flow; Serpentinization; Earth sciences; Geovetenskap;

    Abstract : In this study, interaction between fluids and deformation during the final stages of magma-poor rifting was investigated. The Tasna Ocean-Continent transition, located in the Swiss Alps, was studied and a large data set was obtained from profiles oriented perpendicular to two detachment faults. READ MORE

  5. 3. Viscous-brittle deformation of shallowly emplaced silicic magma : Implications for outgassing and volcanic hazards

    Author : Taylor Witcher; Steffi Burchardt; Edward Llewellin; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; magma deformation; magmatic outgassing; magmatic intrusions; rhyolite; Sandfell laccolith; crystal mush; volcanic hazards; Geovetenskap med inriktning mot mineralogi; petrologi och tektonik; Earth Science with specialization in Mineral Chemistry; Petrology and Tectonics;

    Abstract : Silicic magma in the shallow crust has the potential to violently erupt, depending on its ability to release overpressures caused by magmatic volatiles (outgassing). Deformation-induced outgassing is prevalent along volcanic conduit margins, where ascending magma is sheared at high rates. READ MORE

  6. 4. Magnetic properties of Neogene regional dikes from east Iceland with special reference to magma flow

    Author : Per Eriksson; Håkan Mattsson; Luleå tekniska universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Tillämpad geofysik; Applied Geophysics;

    Abstract : This thesis deals with rock magnetic measurements on Neogene dikes from the eastern fjords of Iceland. A vast amount of dikes generally striking north-north-east occur as swarms in the glacially eroded lava pile. READ MORE

  7. 5. Dynamic Modelling of Physical Processes in Magmatic Systems: Dyke Emplacement and Flow-Induced Crystal Rotations

    Author : Rémi Vachon; Christoph F. Hieronymus; Janine Kavanagh; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Numerical solutions; elasticity and anelesticity; fracturing; magmatic plumbing system; sheet-like intrusions; rheology of the crust; physics of magma; solid mechanics; fluid flow; crystal rotation;

    Abstract : The main motivation for this thesis is to develop and improve numerical tools and methods that help further our comprehension of the volcanic plumbing system and its dynamics.The commonly used standard elastic model predicts solutions of dyke shape, thickness, over-pressure and fracturing criteria that do not always fit natural observations. READ MORE