Sökning: "petrologi och tektonik"
Visar resultat 6 - 10 av 35 avhandlingar innehållade orden petrologi och tektonik.
6. Evolution of a silicic magma reservoir in the upper crust : Reyðarártindur pluton, Southeast Iceland
Sammanfattning : Field observations of extinct and exposed magma reservoirs shed light on processes operating in the roots of presently active volcanoes. The Reyðarártindur pluton, Southeast Iceland is an example of a fossil shallow magma reservoir that fed eruptions. LÄS MER
7. Revealing invisible strain : Magnetic Fabric Analysis as Strain Indicator in Analogue Models and Nature
Sammanfattning : Strain is accommodated by folding, thrusting and an “invisible” component, known as penetrative strain. Magnetic fabric analysis allows for identification and quantification of this imperceivable strain. In this thesis, magnetic fabric analysis is applied to quantify strain in analogue sandbox models. LÄS MER
8. Viscous-brittle deformation of shallowly emplaced silicic magma : Implications for outgassing and volcanic hazards
Sammanfattning : 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. LÄS MER
9. Synthesis and Tuning of Multifunctional Materials at High Pressure
Sammanfattning : At the present stage, human society is developing at an unprecedented speed, facing an emergence of highly pressing challenges, e.g., information explosion, energy production problems, environmental pollution, climate problems. Functional materials with tailored properties are considered as holding a key to solving these problems. LÄS MER
10. Trans-crustal magma storage in contrasting tectonic settings
Sammanfattning : Magmatic plumbing systems comprise magma chambers, sheet intrusions, and conduits which link the Earth’s deep interior with the Earth’s surface. As such, they are the structural framework of magma transport and storage that is governed by complex physical and chemical processes in magma reservoirs and through the interaction of magma bodies with surrounding crustal rocks over timescales from hours to millions of years. LÄS MER