Recent additions

  • Molecules and Morphotypes – Exploring benthic foraminiferal biodiversity in seep-influenced habitats 

    Holm, Villads Dyrved (Master thesis; Mastergradsoppgave, 2023-05-15)
    Beneath the seafloor, methane, a potent greenhouse gas, is trapped in ice-like structures, prone to destabilization and gas release in a warming climate. Gas releases through the seabed concentrated in seeps, creating unique ecosystems, hostile to some lifeforms but able to sustain others. Foraminifera have proved useful in biodiversity and ecosystem quality assessment due to their ubiquity in ...
  • Sedimentological and geochemical investigations of hydrothermally impacted sediments at the Aurora vent field, Fram Strait 

    Bjørnå, Eivind Urbye (Mastergradsoppgave; Master thesis, 2023-05-15)
    Hydrothermal vents are the result of the interaction between seawater and magma and occur at regular intervals along mid ocean ridges. The first visual confirmation of plumes was done in 1977. The detection of hydrothermal plumes has both provided indirect evidence for their existence and a resolution of the occurrences . In deep ocean with low sedimentation rates, hydrothermal plumites have the ...
  • The Roles of Light Absorbing Particles in the Norwegian Arctic Snow 

    Olanrewaju, Olasubomi Quadri (Mastergradsoppgave; Master thesis, 2023-05-08)
    Light absorbing particles (LAPs) such as black carbon (BC) and dust can reduce snow albedo and have a positive radiative forcing. Previous studies investigating LAP in snow in Tromsø focused on black carbon (BC) also called elemental carbon because it has human sources, but dust should also be considered because, while largely from natural sources, it is present in higher concentrations. To quantify ...
  • Origin and Economic Potential of Lithium-mineralized Granitic Pegmatites in Helgeland, North Norway 

    Lomotey, Reginald Mensah (Mastergradsoppgave; Master thesis, 2023-08-04)
    A comprehensive set of analytical techniques, encompassing geological, petrographic, mineralogical, and zircon U-Pb-Hf isotopic compositions, was employed to investigate a relatively poorly known pegmatite field located in Helgeland, North Norway. The Paleoproterozoic basement gneisses in the area have U-Pb zircon crystallization ages between 1870 ± 12 and 1811 ± 6 Ma, meaning that they belong to ...
  • Palaeoceanographic and climate changes during the Holocene in Hinlopen Strait, northern Svalbard 

    Hosseini, Mehdi (Mastergradsoppgave; Master thesis, 2023-05-20)
    This study investigates the paleoceanographic changes in the Hinlopen Strait, situated between Spitsbergen and Nordaustlandet, through a multi-proxy analysis of sediment core HH15-1280-GC (439 m water depth). Located near the Polar Front, this region is highly sensitive to even minor alterations in the ocean circulation and climate, which can be reconstructed from marine sediment records. The core ...
  • 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 ...
  • An investigation into the causal factors of the Kråknes landslide 

    Sandnes, Torgrim (Mastergradsoppgave; Master thesis, 2021-05-15)
    On the 3rd of June 2020, a landslide measuring 600 meters long and 160 meters wide initiated along the shoreline at Kråknes, in Alta municipality in Troms and Finnmark County. The landslide was comprised of a series of smaller slides, which destroyed eight houses and a caravan in the process. Fortunately, no human lives were lost in the event. Due to the widespread presence of sensitive clays along ...
  • Climate and sea-ice development between 890 and 1660 CE in SW Greenland revealed by marine diatom studies 

    Enguídanos, Eira Triguero (Master thesis; Mastergradsoppgave, 2022-11-24)
    This thesis presents the results of august Sea Surface Temperature reconstructions from marine diatom assemblages in samples from core Ga3-2 retrieved from Narsaq Sound, inside the Ikersuad fjord, South Greenland. The diatom samples provide a high-resolution (~30-year) reconstruction dating between 890 and 1660 CE (common era). The results show variable conditions with warm periods between 960 and ...
  • Late Quaternary tephra stratigraphy and paleoenvironmental reconstruction based on lake sediments from North and Northeast Iceland 

    Bender, Emma Marie (Mastergradsoppgave; Master thesis, 2020-07-12)
    Due to Iceland’s position in the middle of the North Atlantic, the island is highly sensitive to oceanic and atmospheric fluctuations, which lead to changes in the environment. These fluctuating environmental conditions in addition to Iceland’s high volcanic activity make it a strategic study area for paleoenvironmental and tephra studies. Lake sediments contain information about such past climate ...
  • Grounding-line fan formation during an Early Holocene readvance of Aldegondabreen, Svalbard. 

    Jóhannesdóttir, Jóhanna Kristín (Mastergradsoppgave; Master thesis, 2021-12-10)
    In this study, two ridge-shaped cross-valley sedimentary landforms, in the lower forefield of Aldegondabreen, a small valley glacier on the west coast of Spitsbergen, Svalbard, were studied to reconstruct the Holocene glacial history of Aldegondabreen prior to the Little Ice Age. Sedimentological and geomorphological methods were used in conjunction with radiocarbon dating to examine the sediments ...
  • Characteristics and failure mechanisms of the unstable rock slope Dusnjárga 

    Bekkevoll, Simen (Mastergradsoppgave; Master thesis, 2022-05-15)
    Large slowly creeping rock slope deformations, with an annual displacement in the range of millimeters to centimeters, have been prone to rapid catastrophic failures in the past. This master thesis focuses on the unstable rock slope of Dusnjárga in Northern Norway. A sudden rapid failure of Dusnjárga would pose a threat to the local society in Lille Altafjord and Burfjord, due to potential secondary ...
  • The effect of lithology and microstructure on the deformation of unstable rock slopes in northern Norway 

    Aamodt, Emilie Jensen (Mastergradsoppgave; Master thesis, 2022-05-14)
    Rock avalanches are a type of natural catastrophe in Norway with very high consequences, and the alpine landscape makes Troms and Finnmark County the region with the highest frequency of unstable rock slopes. The bedrock geology is highly relevant to assess and understand the failure mechanisms, and mechanical properties that influence deformation in rock slopes. Pre-existing structures and lithological ...
  • Sedimentology and architecture of a deep-water turbidite system; Kongsfjord Formation, Finnmark, northern Norway 

    Alain, Lucie (Mastergradsoppgave; Master thesis, 2022-05-15)
    The Kongsfjord Formation is a Late Precambrian deep-marine sedimentary succession exposed along the northern coastline of the Varanger Peninsula, northern Norway. Several studies in the 1970s and 1980s led to the recognition of the Formation as an ancient submarine fan system and to the identification of several architectural elements, including lobes and channels. However, there are no published ...
  • The Use of Foraminiferal Geochemistry to Investigate Methane Seepage at the Svyatogor Ridge, Arctic Ocean 

    Akinselure, Abidemi Alex (Master thesis; Mastergradsoppgave, 2022-05-12)
    Methane is a greenhouse gas contributing to contemporaneous global warming, and seepage is one of the ways through which it migrates from the deep sedimentary basins, all the way up to the hydro- and atmosphere. The study of methane seepage is still young as scientists are yet to discover most seep sites as well as seep associated biological species. A record of past methane seepage can be derived ...
  • A Quantitative Analysis of Seasonal and Regional Forcing on the Terminus of Store Glacier, Greenland, from High Resolution Photogrammetry 

    Pearson, Hayden (Master thesis; Mastergradsoppgave, 2022-01-15)
    A quantitative analysis of seasonal and regional forcing on the terminus of Store Glacier, Greenland, from high resolution photogrammetry for the period between 10 May 2014 and 13 June 2014. Imagery is analyzed through ImGRAFT processing to create a detailed velocity and strain rate for the proglacial mélange and glacial terminus in order to investigate changes to glacial calving dynamics during ...
  • Reconstruction of the Kråknes landslide event, Alta 

    Pettersen, Stina Mari (Master thesis; Mastergradsoppgave, 2021-05-15)
    On June 3rd, 2020 a major quick clay landslide occurred at Kråknes in Alta municipality, Northern Norway. The landslide event destroyed eight buildings and was estimated to be 650 meters wide and 40 meters high. Two days later, another landslide occurred, this time causing the old E6 road above the previous landslide area to slip out towards the sea. People lost cabins and other valuable possessions, ...
  • Struktur- og Intrusjonshistorie for pegmatittiske gangsvermer knyttet til den paleoproterozoiske Ersfjordgranitten, Vest-Troms Grunnfjellskompleks 

    Bakke, Ingvild Brynjulvsrud (Mastergradsoppgave; Master thesis, 2022-03-31)
    Vest-Troms Grunnfjellkompleks er marginen og kontinuasjonen av det Fennoskandiske Skjold under de Kaledonske skyvedekkene. WTBC har utviklet seg gjennom flere fjellkjededannelser, dannelse av riftbassenger, høy- til lav-metamorf omvandling og flere episoder med bimodal magmatisme. Dette gjør at WTBC er et viktig studieområdet for å forstå jordas utvikling i Arkeikum og Palaeoproterozoikum. Formålet ...
  • Gas seeps in the Barents Sea – how does the geology influence the natural and well related seeps? 

    Nguyen, Hieu Khanh (Master thesis; Mastergradsoppgave, 2021-07-15)
    This thesis examined gas flares found in the Cruise log 20-2 from CAGE and correlated them to subsurface seismic data in south of Barents Sea. The cruise log passed several hydrocarbon discoveries/fields such as Goliat, Caurus/Langlitinden, Norvarg and Wisting/Hanssen. The aim of the thesis is to investigate the relationship between shallow geology and the observed gas flares and seabed leakages. ...
  • The geochemical signature of Cu mineralisation preserved in stream sediments from the Alta-Kvænangen Tectonic Window, Northern Norway 

    Hilmo, Johan Bang (Master thesis; Mastergradsoppgave, 2021-06-13)
    The Paleoproterozoic Greenstone Belts of Fennoscandia are metamorphosed and deformed volcanic and sedimentary basins with a high metallic ore potential. One of those, the Alta-Kvænangen Tectonic Window (AKTW), is exposed as a window below the Caledonides of Northern Norway. The Kåfjord area located within the AKTW hosts numerous known Cu occurrences. The Cu mineralisation in Kåfjord occurs mostly ...
  • Geochemical characteristics of sediment- and mafic rock-hosted Cu deposits in the Kåfjord area, Alta-Kvænangen Tectonic Window, Northern Norway 

    Simonsen, Sondre Stenvold (Mastergradsoppgave; Master thesis, 2021-06-15)
    The Precambrian Alta-Kvænangen Tectonic Window (AKTW) located in the northern part of Norway, hosts different types of copper mineralization. Some of Cu occurrences have been previously mined, but their geochemical and stable isotope characteristics have not been a subject of detailed investigations, and therefore the relevant ore-forming processes are still poorly understood. This study, brings new ...

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