Blar i tittel Mastergradsoppgaver i geologi

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    • Metamorf utvikling av Skagen-eklogitt, Flakstadøy, Lofoten 

      Bakkejord, Sandra Johansen (Master thesis; Mastergradsoppgave, 2011-05)
      Bergartsprøver fra Skagen på Flakstadøy, Lofoten er mikroskopert, analysert ved mikrosonde og gjort geotermobarometriske estimat på, alt for å kunne fortelle om den metamorfe utviklingen for bergartene. Resultatene forteller om en polymorf utviklingshistorie av de proterozoiske bergartene som Flakstadøy er bygd opp av. Flere eklogittforekomster er funnet på øyen, noe som ikke er så overraskende da ...

    • Metamorphic conditions in the Coastal-Punta del Este Terrane of the Kaoko-Dom Feliciano Belt in Namibia and Uruguay 

      Skagseth, Ida Grindal (Master thesis; Mastergradsoppgave, 2016-06-24)
      The metasediementary rocks of the Coastal Terrane in the Kaoko Belt (Namibia) and the meta-igneous rocks of the Punta del Este-Terrane in the Dom Feliciano Belt (Uruguay) both share one high-grade metamorphic event at approximately the same time of c. 650-630 Ma. Metamorphic conditions of this high-grade event were estimated in four samples from the Punta del Este Terrane and two samples from ...

    • Metamorphic evolution in external zones of the Dom Feliciano-Kaoko orogenic system. Examples from the Brusque Metamorphic Complex, Dom Feliciano Belt (Brazil) and the Central Kaoko Zone, Kaoko Belt (Namibia) 

      Asvald, Caroline (Master thesis; Mastergradsoppgave, 2018-05-15)
      The Brusque Metamorphic Complex in the Dom Feliciano Belt (Brazil) and the Central Kaoko Zone in the Kaoko Belt (Namibia) represent foreland fold- and thrust belts in external parts of the northern Dom Feliciano-Kaoko orogenic system. Petrographic and field observations of metapelitic samples from the Brusque Metamorphic Complex suggests that the western part of the complex can be subdivided into ...

    • Metamorphic evolution of the Passo Feio Complex (central part of the Dom Feliciano Belt, southern Brazil) 

      Tennholm, Tonje (Master thesis; Mastergradsoppgave, 2019-05-15)
      The Passo Feio Complex is considered as a part of the São Gabriel Terrane, located to the west of the Dom Feliciano Belt in the state of Rio Grande do Sul (Brazil), but shows numerous similarities with the easterly exposed Porongos Metamorphic Complex which is a part of the Schist Belt in that area. P-T phase equilibrium modelling of metamorphosed sedimentary rocks from the Passo Feio Complex was ...

    • Microstructural and metamoprhic study in rocks of the Seiland Igneous Province between Langfjord and Øksfjord, Alta kommune, Northern Norway 

      Rustad, Birgit Katrine (Master thesis; Mastergradsoppgave, 2010-11-22)
      The Seiland Igneous Province (SIP) is situated in western Finnmark, Northern Norway. The SIP comprises a suite of mainly gabbroic plutons, with ultramafic, syenitic and felsic intrusions. The origin of the region has been interpreted in different ways and several tectonic models have been proposed. Many different ideas have been suggested about the metamorphic, magmatic and deformation history. New ...

    • Microstructural changes during melt-assisted modification of quartzofeldspatic rocks. An example from the Eger Complex, North-Western Bohemian Massif 

      Hafne, Kristine (Master thesis; Mastergradsoppgave, 2017-05-15)
      The Eger Complex is situated in the Saxothuringian domain at the western margin of Bohemian Massif (Czech Republic). Migmatitic orthogneisses associated with granofelses and high-pressure felsic granulites make up the majority of the complex, which is interpreted as an upper crystalline nappe exhumed from underneath the fore-arc Teplá-Barrandian domain during the Variscan orogeny. Studies conducted ...

    • Microstructural investigation of shear localization in the Ersfjord granite, Kvaløya, Troms: A case study of kinematics, deformation mechanisms and fabric relationships 

      Persen, Daniel (Master thesis; Mastergradsoppgave, 2014-05-15)
      The present “case study” deals with Paleozoic-Mesozoic oblique-dextral strike-slip shear zones situated within the Ersfjord granite (1,79 Ga), that are believed to give valuable insight into fault- and fluid flow mechanics from the brittle-ductile transition zone. Mesoscopic observations combined with microstructural evidence and geochronology suggests that Late Carbonifereous-Early Triassic fault ...

    • Mid Miocene – Early Pliocene depositional environment on the northern part of the Mid-Norwegian Continental Shelf 

      Blakstad, Bendik Skjevik (Master thesis; Mastergradsoppgave, 2016-05-15)
      Based on the study of 2D seismic data, this thesis have focused on the depositional environment during the deposition of the Kai formation (Mid-Miocene – Early Pliocene) on the Mid-Norwegian continental margin, in order to increase our knowledge of the evolution of the paleo-environment in the time-period right before the development of the large Northern Hemisphere ice sheets. Based on a seismic ...

    • Mineralogy,geochemistry and ore potential of an ultramafic rock from the Kvaløya Island. 

      Pryadunenko, Anna (Master thesis; Mastergradsoppgave, 2013-12-29)
      A low-grade metamorphic ultramafic rock at the Kvaløya Island, North Norway, shows Ni content up to 2 500 ppm. Olivine is absent from the rock, and Ni is principally bonded in pentlandite, violarite and millerite. Among other sulphide minerals found in the rock are pyrite, pyrrhotite, chalcopyrite, sphalerite, galena and heazlewoodite (?). Two generations of pyrite are observed in the rock. Second ...

    • The Mjølnir Impact Crater in the central Barents Sea - a potential hydrocarbon system? 

      Rein, Sindre Arnesen (Master thesis; Mastergradsoppgave, 2020-05-15)
      A meteor impact event on the Bjameland Platform in the Norwegian Barents Sea about 142 ± 2.6 million years ago formed the Mjølnir Impact Crater. The structure has diameter of 40 km impacting the Mesozoic stratigraphy, and has previously been investigated with emphasis on the dynamics of the impact, the structure formation, sedimentation and post-impact tectonics. Impact structures have proven to be ...

    • Moraine chronology and deglaciation of the northern Lyngen Peninsula, Troms, Norway 

      Greig, David (Master thesis; Mastergradsoppgave, 2011-01-28)
      The northern Lyngen Peninsula in Troms, northern Norway, displays a suite of glacial and periglacial landforms that describe both a complex interaction of geomorphological processes and its history of deglaciation during the Late Weichselian and Holocene. These features include: cirque and valley glacier moraines, relict ice-cored moraines, rock avalanches, rock glaciers, a protalus rampart, and ...

    • Morfologisk og sedimentologisk studium av det moderne og hevede Storfjorddeltaet, Troms 

      Jensen, Lisbeth (Master thesis; Mastergradsoppgave, 2018-07-05)
      Denne oppgaven består i å undersøke det aktive Storfjorddeltaet med hensyn på morfologi og sedimentologi. Den hevede delen av deltaet ble også undersøkt ved 3 snitt for å finne ut hvordan deltaet hadde progradert for omtrent 3000 år siden og frem til i dag. Kartlegging og flybilder ble brukt, i tillegg til siling av prøver og datering av materiale. Resultatet ble at deltaet er klassifisert som et ...

    • Morfologisk og sedimentologisk undersøkelse av sanduravsetninger foran Steindalsbreen, Lyngen, Tromsø 

      Storjord, Heidi (Master thesis; Mastergradsoppgave, 2016-05-15)
      Steindalsbreen som er lokalisert i øvre del av Steindalen, Lyngen har etter siste istid smeltet tilbake. Dette har ført til suksessiv dannelse av tre sandursletter på lavgradients områder i dalbunnen som har blitt eksponert gradvis mens isbreen har smeltet tilbake. Alle tre har ulik alder, distanse til breen, samt horisontal og lateral utbredelse med ulik morfologi. De representerer forskjellig ...

    • Morphodynamics of a sandy beach during a one-year cycle at Sandbukt, Breivika, Troms, northern Norway 

      Jóhannesson, Jóhannes Marteinn (Master thesis; Mastergradsoppgave, 2015-12-11)
      Six cross-shore beach profiles were monitored in a monthly interval at Sandbukt Beach at Breivikeidet, from October 2014 to October 2015, in order to study impact of storms on the beach profile and understand monthly, seasonal, and annual changes in the beach profile. Change in beach volume showed erosion and decrease in beach width on the southern part of the beach during the winter season, while ...

    • Morphological expressions of recent and past fluid flow expulsion of the SW Barents Sea 

      Namyatova, Daria Alekseevna (Master thesis; Mastergradsoppgave, 2011-05-16)
      ABSTRACT Three 3D seismic cubes (EL0001, St0309 and ST05M09) from different parts of the SW Barents Sea basin were studied to decipher processes causing depressions in the seabed and subseabed. Since the investigated areas were under the influence of various depositional and erosional conditions during ice ages special attention was given to the potential of ice driven morphologies. Depressions ...

    • Multibeam bathymetry and backscatter data analysis of pockmarks at Vestnesa Ridge off NW-Svalbard 

      Villaflor, Glennda Alina (Master thesis; Mastergradsoppgave, 2014-11-09)
      The Vestnesa Ridge is an elongated sediment drift situated at 79o N on the northwest Svalbard margin in the Fram Strait. It is one of the northernmost documented oceanic gas hydrate provinces. The narrow southeastern part of the ridge is characterized by pockmarks that line up along the apex of the crest. Some of these pockmarks are continuously venting gas while some are inactive. This study looks ...

    • Multiproxy reconstruction of past methane emissions at Storfjordrenna Pingos site (South of Svalbard) during the last deglaciation 

      Paavilainen, Anne (Mastergradsoppgave; Master thesis, 2023-05-15)
      The main ambition of this thesis was to study the relationship between isotopic signature of fossil foraminifera and past methane emission at Storfjordrenna Pingos site (South of Svalbard) during the last deglaciation in context of past climatic changes. Two gravity cores, the core 1070 from the flank of the presently inactive gas hydrate pingo 5 (GHP5) and the core 1069 from the top of the ...

    • Natural and anthropogenic deposition in Bøkfjorden 

      Ladstein, Anette Klev (Master thesis; Mastergradsoppgave, 2018-05-15)
      The aim for this study is to characterise and distinguish natural and anthropogenic deposition in Bøkfjorden, and to identify the spreading and the impact of submarine tailings placements on the seafloor. The analyses are based on the integration of swath bathymetry, high-resolution seismics and multi-proxy analyses of four sediment cores The physical properties, including magnetic susceptibility ...

    • Neoglacial plateau ice cap behaviour in Central Spitsbergen constrained by subglacially preserved vegetation. 

      Roche, Amélie (Mastergradsoppgave; Master thesis, 2021-06-15)
      Cold-based glacial ice is well known to preserve underlying landforms produced by earlier processes but can also preserve pre-existing organic material and vegetated ground. With current rapid climate warming, overall glacier retreat in the Arctic is exposing formerly ice-buried in situ vegetation at the margin of cold-based ice bodies. Radiocarbon dating of this vegetation constrains the timing of ...

    • The Nussir copper deposit: petrology, mineralogy, geochemistry and distribution of ore mineralization 

      Mun, Yulia (Master thesis; Mastergradsoppgave, 2013-06-28)
      The geology, petrography, mineralogy and geochemistry of the Nussir copper deposit in Finnmark, Northern Norway were studied during writing this thesis. The Nussir deposit of copper is a sedimentary-hosted hydrothermal deposit affected by low grade methamorphism and ductile deformation. The copper mineralization includes chalcopyrite, chalcocite, bornite, covellite, and digenite. The deposit contains ...